30 June 2011

Big Cats....


Tiger

  • Scientific classification
  • Kingdom: Animalia
  • Phylum:  Chordata
  • Class:   Mammalia
  • Order:   Carnivora
  • Family: Felidae                                                                
  • Genus:  Panthera
  • Species:P. tigris                                                            
  • Binomial name : Panthera tigris
Subspecies

  • P. t. tigris
  • P. t. corbetti
  • P. t. jacksoni
  • P. t. sumatrae                       
  • P. t. altaica                               
  • P. t. amoyensis
  • †P. t. virgata
  • †P. t. balica
  • †P. t. sondaica
The tiger (Panthera tigris), a member of the Felidae family, is the largest of the four "big cats" in the genus Panthera. The tiger is native to much of eastern and southern Asia, and is an apex predator and an obligate carnivore. The larger tiger subspecies are comparable in size to the biggest extinct felids, reaching up to 3.3 metres (11 ft) in total length, weighing up to 300 kilograms (660 pounds), and having canines up to 4 inches (100 mm) long.Aside from their great bulk and power, their most recognisable feature is a pattern of dark vertical stripes that overlays near-white to reddish-orange fur, with lighter underparts. The most numerous tiger subspecies is the Bengal tiger, while the largest is the Siberian tiger.   
Siberian tiger

Tigers have a lifespan of 10–15 years in the wild, but can live longer than 20 years in captivity,They are highly adaptable and range from the Siberian taiga to open grasslands and tropical mangrove swamps.
They are territorial and generally solitary animals, often requiring large contiguous areas of habitat that support their prey demands. This, coupled with the fact that they are indigenous to some of the more densely populated places on earth, has caused significant conflicts with humans. Three of the nine subspecies of modern tiger have gone extinct, and the remaining six are classified as endangered, some critically so. The primary direct causes are habitat destruction, fragmentation, and hunting.
Historically, tigers have existed from Mesopotamia and the Caucasus throughout most of South and East Asia. Today, the range of the species is radically reduced. All surviving species are under formal protection, yet poaching, habitat destruction, and inbreeding depression continue to threaten the tigers.Tigers are among the most recognisable and popular of the world's charismatic megafauna. They have featured prominently in ancient mythology and folklore, and continue to be depicted in modern films and literature. Tigers appear on many flags and coats of arms, as mascots for sporting teams, and as the national animal of several Asian nations, including India.

Range and habitat

In the past, tigers were found throughout Asia, from the Caucasus and the Caspian Sea to Siberia and Indonesia. Today the range of the tiger is only 7% of what it used to be.Further more, within the past decade alone, the estimated area known to be occupied by tigers has declined by 41%.

During the 19th century, the tiger completely vanished from western Asia and became restricted to isolated pockets in the remaining parts of their range. Today, their range is fragmented, and certain parts degraded, and extends from India in the west to China and Southeast Asia in the east. The northern limit is close to the Amur River in south eastern Siberia. The only large island inhabited by tigers today is Sumatra. Tigers vanished from Java and Bali during the 20th century. In Borneo they are known only from fossil remains.
 
Tiger habitats will usually include sufficient cover, proximity to water, and an abundance of prey. Bengal Tigers live in many types of forests, including wet; evergreen; the semi-evergreen of Assam and eastern Bengal; the mangrove forest of the Ganges Delta; the deciduous forest of Nepal, and the thorn forests of the Western Ghats. Compared to the lion, the tiger prefers denser vegetation, for which its camouflage colouring is ideally suited, and where a single predator is not at a disadvantage compared with the multiple felines in a pride.
Among the big cats, only the tiger and jaguar are strong swimmers; tigers are often found bathing in ponds, lakes, and rivers. During the extreme heat of the day, they often cool off in pools. Tigers are excellent swimmers, and are able to carry prey through the water.

Physical characteristics

Tigers typically have rusty-reddish to brown-rusty coats, a whitish medial and ventral area, a white "fringe" that surrounds the face, and stripes that vary from brown or gray to pure black. The form and density of stripes differs between subspecies (as well as the ground coloration of the fur; for instance, Siberian tigers are usually paler than other tiger subspecies), but most tigers have over 100 stripes[citation needed].
The pattern of stripes is unique to each animal, these unique markings can be used by researchers to identify individuals (both in the wild and captivity), much in the same way that fingerprints are used to identify humans. It seems likely that the function of stripes is camouflage, serving to help tigers conceal themselves amongst the dappled shadows and long grass of their environment as they stalk their prey. The stripe pattern is also found on the skin of the tiger. If a tiger were to be shaved, its distinctive camouflage pattern would be preserved.
Like other big cats, tigers have a white spot on the backs of their ears. These spots, called ocelli, serve a social function, by communicating the animal's mental state to conspecifics in the gloom of dense forest or in tall grass.
Tigers have the additional distinction of being the heaviest cats found in the wild. They also have powerfully built legs and shoulders, with the result that they, like lions, have the ability to pull down prey substantially heavier than themselves. However, the subspecies differ markedly in size, tending to increase proportionally with latitude, as predicted by Bergmann's Rule.
Large male Siberian Tigers (Panthera tigris altaica) can reach a total length of 3.5 m "over curves" (3.3 m. "between pegs") and a weight of 306 kilograms,.This is considerably larger than the sizes reached by island-dwelling tigers such as the Sumatran, the smallest living subspecies, with a body weight of only 75–140 kg. Depending upon subspecies tigers may be 1.4-2.8 m (4.6-9.2 ft) long from along the head and body, while the tail may add a further 0.6-1.1 m (2-3.6 ft). At the shoulder, tigers may variously stand 0.7-1.2 m (2.1–4 ft) tall.
Skeleton

Tigresses are smaller than the males in each subspecies, although the size difference between male and female tigers tends to be more pronounced in the larger subspecies of tiger, with males weighing up to 1.7 times more than the females. In addition, male tigers have wider forepaw pads than females. Biologists use this difference to determine gender based on tiger tracks. The skull of the tiger is very similar to that of the lion, though the frontal region is usually not as depressed or flattened, with a slightly longer postorbital region. The skull of a lion has broader nasal openings. However, due to the amount of skull variation in the two species, usually, only the structure of the lower jaw can be used as a reliable indicator of species.
Tigers have round pupils and yellow irises (except for the blue eyes of white tigers). Due to a retinal adaptation that reflects light back to the retina, the night vision of tigers is six times better than that of humans.

Subspecies

there are nine recent subspecies of tiger, three of which are extinct. Their historical range (severely diminished today) ran through Bangladesh, Siberia, Iran, Afghanistan, India, China, and south east Asia, including some Indonesian islands. The surviving subspecies, in descending order of wild population, are:


The Bengal tiger

The Bengal tiger or the Royal Bengal tiger (Panthera tigris tigris) is the most common subspecies of tiger and is found primarily in India and Bangladesh. It lives in varied habitats: grasslands, subtropical and tropical rainforests, scrub forests, wet and dry deciduous forests, and mangroves. Males in the wild usually weigh 205 to 227 kg (450 to 500 lb), while the average female will weigh about 141 kg. However, the northern Indian and the Nepalese Bengal tigers are somewhat bulkier than those found in the south of the Indian Subcontinent, with males averaging around 235 kilograms (520 lb). While conservationists already believed the population to be below 2,000, the most recent audit by the Indian Government's National Tiger Conservation Authority has estimated the number at just 1,411 wild tigers (1165–1657 allowing for statistical error), a drop of 60% in the past decade. Since 1972, there has been a massive wildlife conservation project, known as Project Tiger, to protect the Bengal tiger. Despite increased efforts by Indian officials, poaching remains rampant and at least one Tiger Reserve (Sariska Tiger Reserve) has lost its entire tiger population to poaching. The passing of the Forest Rights Act by the Indian government in 2006 has worsened the situation as evidence has shown that human habitats and tigers cannot co-exist and has pushed the Indian tiger on the brink of extinction.However, another census by the government in 2011 using better counting methods showed a rise of 20%, taking the numbers to 1,706.

Indochinese tiger

The Indochinese Tiger (Panthera tigris corbetti), also called Corbett's tiger, is found in Cambodia, China, Laos, Burma, Thailand, and Vietnam. These tigers are smaller and darker than Bengal tigers: Males weigh from 150–190 kg (330–420 lb) while females are smaller at 110–140 kg (240–310 lb). Their preferred habitat is forests in 
mountainous or hilly regions. Estimates of the Indochinese tiger population vary between 1,200 to 1,800, with only several hundred left in the wild. All existing populations are at extreme risk from poaching, prey depletion as a result of poaching of primary prey species such as deer and wild pigs, habitat fragmentation and inbreeding. In Vietnam, almost three-quarters of the tigers killed provide stock for Chinese pharmacies.




Malayan tiger

The Malayan Tiger (Panthera tigris jacksoni), exclusively found in the southern part of the Malay Peninsula, was not considered a subspecies in its own right until 2004. The new classification came about after a study by Luo et al. from the Laboratory of Genomic Diversity Study, part of the National Cancer Institute of the United States
Recent counts showed there are 600–800 tigers in the wild, making it the third largest tiger population, behind the Bengal tiger and the Indochinese tiger. The Malayan tiger is the smallest of the mainland tiger subspecies, and the second smallest living subspecies, with males averaging about 120 kg and females about 100 kg in weight. The Malayan tiger is a national icon in Malaysia, appearing on its coat of arms and in logos of Malaysian institutions, such as Maybank.


Sumatran tiger

The Sumatran Tiger (Panthera tigris sumatrae) is found only on the Indonesian island of Sumatra, and is critically endangered. It is the smallest of all living tiger subspecies, with adult males weighing between 100–140 kg (220–310 lb) and females 75–110 kg (170–240 lb). Their small size is an adaptation to the thick, dense forests of the island of Sumatra where they reside, as well as the smaller-sized prey. The wild population is estimated at between 400 and 500, seen chiefly in the island's national parks. 
Recent genetic testing has revealed the presence of unique genetic markers, indicating that it may develop into a separate species, if it does not go extinct. This has led to suggestions that Sumatran tigers should have greater priority for conservation than any other subspecies. While habitat destruction is the main threat to existing tiger population (logging continues even in the supposedly protected national parks), 66 tigers were recorded as being shot and killed between 1998 and 2000, or nearly 20% of the total population.




Siberian tiger

The Siberian tiger (Panthera tigris altaica), also known as the Amur, Manchurian, Altaic, Korean or North China tiger, which is the most northernmost subspecies, is confined to the Amur-Ussuri region of Primorsky Krai and Khabarovsk Krai in far eastern Siberia, where it is now protected. The largest subspecies of tiger, it has a head and body length of 160–180 cm for
females and 190–230+ cm for males, plus a tail of about 60–110 cm long (about 270–330 cm in total length) and an average weight of around 227 kilograms (500 lb) for males, the Amur tiger is also noted for its thick coat, distinguished by a paler golden hue and fewer stripes. The heaviest wild Siberian tiger on record weighed in at 384 kg, but according to Mazak these giants are not confirmed via reliable references. Even so, a six-month old Siberian tiger can be as big as a fully grown leopard. The last two censuses (1996 and 2005) found 450–500 Amur tigers within their single, and more or less continuous, range making it one of the largest undivided tiger populations in the world. Genetic research in 2009 demonstrated that the Siberian tiger, and the western "Caspian tiger" (once thought to have been a separate subspecies that became extinct in the wild in the late 1950s are actually the same subspecies, since the separation of the two populations may have occurred as recently as the past century due to human intervention.

South China tiger

The South China Tiger (Panthera tigris amoyensis), also known as the Amoy or Xiamen tiger, is the most critically endangered subspecies of tiger and is listed as one of the 10 most endangered animals in the world.[clarification needed] One of the smaller tiger subspecies, the length of the South China tiger ranges from 2.2–2.6 m (87–100 in) for both males and females. Males weigh between 127 and 177 kg (280 and 390 lb) while females weigh between 100 and 118 kg (220 and 260 lb). From 1983 to 2007, no South China tigers were sighted. In 2007 a farmer spotted a tiger and handed in photographs to the authorities as proof.The photographs in question, however, were later exposed as fake, copied from a Chinese calendar and digitally altered, and the “sighting” turned into a massive scandal.
In 1977, the Chinese government passed a law banning the killing of wild tigers, but this may have been too late to save the subspecies, since it is possibly already extinct in the wild. There are currently 59 known captive South China tigers, all within China, but these are known to be descended from only six animals. Thus, the genetic diversity required to maintain the subspecies may no longer exist. Currently, there are breeding efforts to reintroduce these tigers to the wild.


Extinct subspecies

  • The Bali Tiger (Panthera tigris balica) was limited to the island of Bali. They were the smallest of all tiger subspecies, with a weight of 90–100 kg in males and 65–80 kg in females. These tigers were hunted to extinction—the last Balinese tiger is thought to have been killed at Sumbar Kima, West Bali on 27 September 1937; this was an adult female. No Balinese tiger was ever held in captivity. The tiger still plays an important role in Balinese Hinduism.
  • The Javan tiger (Panthera tigris sondaica:was limited to the Indonesian island of Java. It now seems likely that this subspecies became extinct in the 1980s, as a result of hunting and habitat destruction, but the extinction of this subspecies was extremely probable from the 1950s onwards (when it is thought that fewer than 25 tigers remained in the wild). The last confirmed specimen was sighted in 1979, but there were a few reported sightings during the 1990s. With a weight of 100–141 kg for males and 75–115 kg for females, the Javan tiger was one of the smaller subspecies, approximately the same size as the Sumatran tiger.
  • The Caspian Tiger (formerly Panthera tigris virgata): also known as the Persian tiger or Turanian tiger was the westernmost population of Siberian tiger, found in Iran, Iraq, Afghanistan, Turkey, Mongolia, Kazakhstan, the Caucasus, Tajikistan, Turkmenistan, and Uzbekistan until it apparently became extinct in the late 1950s, though there have been several alleged more recent sightings of the tiger. Though originally thought to have been a distinct subspecies, genetic research in 2009 suggest that the animal was largely identical to the Siberian tiger.
Hybrids

Hybridisation among the big cats, including the tiger, was first conceptualised in the 19th century, when zoos were particularly interested in the pursuit of finding oddities to display for financial gain. Lions have been known to breed with tigers (most often the Amur and Bengal subspecies) to create hybrids called ligers and tigons.Such hybrids were once commonly bred in zoos, but this is now discouraged due to the emphasis on conserving species and subspecies. Hybrids are still bred in private menageries and in zoos in China.
 The liger is a cross between a male lion and a tigress. Because the lion sire passes on a growth-promoting gene, but the corresponding growth-inhibiting gene from the female tiger is absent, ligers grow far larger than either parent. They share physical and behavioural qualities of both parent species (spots and stripes on a sandy background). Male ligers are sterile, but female ligers are often fertile. Males have about a 50% chance of having a mane, but, even if they do, their manes will be only around half the size of that of a pure lion. Ligers are typically between 10 to 12 feet in length, and can be between 800 and 1,000 pounds or more.
The less common tigon is a cross between the lioness and the male tiger.

Colour variations

White tigers

There is a well-known mutation that produces the white tiger, technically known as chinchilla albinistic, an animal which is rare in the wild, but widely bred in zoos due to its popularity. Breeding of white tigers will often lead to inbreeding (as the trait is recessive). Many initiatives have taken place in white and orange tiger mating in an attempt to remedy the issue,

often mixing subspecies in the process. Such inbreeding has led to white tigers having a greater likelihood of being born with physical defects, such as cleft palates and scoliosis (curvature of the spine).Furthermore, white tigers are prone to having crossed eyes (a condition known as strabismus). Even apparently healthy white tigers generally do not live as long as their orange counterparts. Recordings of white tigers were first made in the early 19th century.They can only occur when both parents carry the rare gene found in white tigers; this gene has been calculated to occur in only one in every 10,000 births. The white tiger is not a separate sub-species, but only a colour
variation; since the only white tigers that have been observed in the wild have been Bengal tigers (and all white tigers in captivity are at least part Bengal), it is commonly thought that the recessive gene that causes the white colouring is probably carried only by Bengal tigers, although the reasons for this are not known. Nor are they in any way more endangered than tigers are generally, this being a common misconception. Another misconception is that white tigers are albinos, despite the fact that pigment is evident in the white tiger's stripes. They are distinct not only because of their white hue; they also have blue eyes.

Golden tabby tigers

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In addition, another recessive gene may create a very unusual "golden tabby" colour variation, sometimes known as "strawberry." Golden tabby tigers have light gold fur, pale legs and faint orange stripes. Their fur tends to be much thicker than normal. There are extremely few golden tabby tigers in captivity, around 30 in all. Like white tigers, strawberry tigers are invariably at least part Bengal. Some golden tabby tigers, called heterozygous tigers, carry the white tiger gene, and when two such tigers are mated, can produce some stripeless white offspring. Both white and golden tabby tigers tend to be larger than average Bengal tigers.






Other colour variations

There are also unconfirmed reports of a "blue" or slate-coloured tiger, the Maltese Tiger, and largely or totally black tigers, and these are assumed, if real, to be intermittent mutations rather than distinct species.

Biology and behaviour

Territorial behaviour

Tigers are essentially solitary and territorial animals. The size of a tiger's home range mainly depends on prey abundance, and, in the case of male tigers, on access to females. A tigress may have a territory of 20 square kilometres, while the territories of males are much larger, covering 60–100 km2. The range of a male tends to overlap those of several females.

The relationships between individuals can be quite complex, and it appears that there is no set "rule" that tigers follow with regards to territorial rights and infringing territories. For instance, although for the most part tigers avoid each other, both male and female tigers have been documented sharing kills. George Schaller observed a male tiger share a kill with two females and four cubs. Females are often reluctant to let males near their cubs, but Schaller saw that these females made no effort to protect or keep their cubs from the male, suggesting that the male might have been the father of the cubs. In contrast to male lions, male tigers will allow the females and cubs to feed on the kill first. Furthermore, tigers seem to behave relatively amicably when sharing kills, in contrast to lions, which tend to squabble and fight. Unrelated tigers have also been observed feeding on prey together. The following quotation is from Stephen Mills' book Tiger, as he describes an event witnessed by Valmik Thapar and Fateh Singh Rathore in Ranthambhore.
A dominant tigress they called Padmini killed a 250 kg (550-lb) male nilgai – a very large antelope. They found her at the kill just after dawn with her three 14-month-old cubs and they watched uninterrupted for the next ten hours. During this period the family was joined by two adult females and one adult male – all offspring from Padmini's previous litters and by two unrelated tigers, one female the other unidentified. By three o'clock there were no fewer than nine tigers round the kill.
When young female tigers first establish a territory, they tend to do so fairly close to their mother's area. The overlap between the female and her mother's territory tends to wane with increasing time. Males, however, wander further than their female counterparts, and set out at a younger age to mark out their own area. A young male will acquire territory either by seeking out a range devoid of other male tigers, or by living as a transient in another male's territory until he is old and strong enough to challenge the resident male. The highest mortality rate (30–35% per year) amongst adult tigers occurs for young male tigers who have just left their natal area, seeking out territories of their own.
 
Tiger dentition(above), compared with that of an Asian black bear (below). The large canines are used to make the killing bite, but they tear meat when feeding using the carnassial teeth.
Male tigers are generally more intolerant of other males within their territory than females are of other females. For the most part, however, territorial disputes are usually solved by displays of intimidation, rather than outright aggression. Several such incidents have been observed, in which the subordinate tiger yielded defeat by rolling onto its back, showing its belly in a submissive posture. Once dominance has been established, a male may actually tolerate a subordinate within his range, as long as they do not live in too close quarters. The most violent disputes tend to occur between two males when a female is in oestrus, and may result in the death of one of the males, although this is a rare occurrence.
To identify his territory, the male marks trees by spraying of urine and anal gland secretions, as well as marking trails with scat. Males show a grimacing face, called the Flehmen response, when identifying a female's reproductive condition by sniffing their urine markings. Like the other Panthera cats, tigers can roar. Tigers will roar for both aggressive and non-aggressive reasons. Other tiger vocal communications include moans, hisses, growls and chuffs.
Tigers have been studied in the wild using a variety of techniques. The populations of tigers were estimated in the past using plaster casts of their pugmarks. This method was found faulty[68] and attempts were made to use camera trapping instead. Newer techniques based on DNA from their scat are also being evaluated. Radio collaring has also been a popular approach to tracking them for study in the wild.

   Hunting and diet

In the wild, tigers mostly feed on larger and medium sized animals. Sambar, gaur, chital, barasingha, wild boar, nilgai and both water buffalo and domestic buffalo are the tiger's favoured prey in India. Sometimes, they also prey on leopards, pythons, sloth bears and crocodiles. In Siberia the main prey species are manchurian wapiti, wild boar, sika deer, moose, roe deer, and musk deer. In Sumatra, sambar, muntjac, wild boar, and malayan tapir are preyed on. In the former Caspian tiger's range, prey included saiga antelope, camels, caucasian wisent, yak, and wild horses. Like many predators, they are opportunistic and will eat much smaller prey, such as monkeys, peafowls, hares, and fish.

Adult elephants are too large to serve as common prey, but conflicts between tigers and elephants do sometimes take place. A case where a tiger killed an adult Indian Rhinoceros has been observed. Young elephant and rhino calves are occasionally taken. Tigers also sometimes prey on domestic animals such as dogs, cows, horses, and donkeys. These individuals are termed cattle-lifters or cattle-killers in contrast to typical game-killers.
Old tigers, or those wounded and rendered incapable of catching their natural prey, have turned into man-eaters; this pattern has recurred frequently across India. An exceptional case is that of the Sundarbans, where healthy tigers prey upon fishermen and villagers in search of forest produce, humans thereby forming a minor part of the tiger's diet. Tigers will occasionally eat vegetation for dietary fiber, the fruit of the Slow Match Tree being favoured.
Tigers are thought to be nocturnal predators, hunting at night. However, in areas where humans are absent, they have been observed via remote controlled, hidden cameras hunting during the daylight hours.They generally hunt alone and ambush their prey as most other cats do, overpowering them from any angle, using their body size and strength to knock large prey off balance. Even with their great masses, tigers can reach speeds of about 49–65 kilometres per hour (35–40 miles per hour), although they can only do so in short bursts, since they have relatively little stamina; consequently, tigers must be relatively close to their prey before they break their cover. Tigers have great leaping ability; horizontal leaps of up to 10 metres have been reported, although leaps of around half this amount are more typical. However, only one in twenty hunts ends in a successful kill.

When hunting large prey, tigers prefer to bite the throat and use their forelimbs to hold onto the prey, bringing it to the ground. The tiger remains latched onto the neck until its prey dies of strangulation. By this method, gaurs and water buffalos weighing over a ton have been killed by tigers weighing about a sixth as much.With small prey, the tiger bites the nape, often breaking the spinal cord, piercing the windpipe, or severing the jugular vein or common carotid artery.Though rarely observed, some tigers have been recorded to kill prey by swiping with their paws, which are powerful enough to smash the skulls of domestic cattle,and break the backs of sloth bears.
During the 1980s, a tiger named "Genghis" in Ranthambhore National Park was observed frequently hunting prey through deep lake water,a pattern of behaviour that had not been previously witnessed in over 200 years of observations. Moreover, he appeared to be extraordinarily successful for a tiger, with as many as 20% of hunts ending in a kill.

    Reproduction

Mating can occur all year round, but is generally more common between November and April.A female is only receptive for a few days and mating is frequent during that time period. A pair will copulate frequently and noisily, like other cats. The gestation period is 16 weeks. The litter size usually consists of around 3–4 cubs of about 1 kilogram (2.2 lb) each, which are born blind and helpless. The females rear them alone, sheltering them in dens such as thickets and rocky crevices. 

The father of the cubs generally takes no part in rearing them. Unrelated wandering male tigers may even kill cubs to make the female receptive, since the tigress may give birth to another litter within 5 months if the cubs of the previous litter are lost.The mortality rate of tiger cubs is fairly high – approximately half do not survive to be more than two years old.
There is generally a dominant cub in each litter, which tends to be male but may be of either sex. This cub generally dominates its siblings during play and

tends to be more active, leaving its mother earlier than usual. At 8 weeks, the cubs are ready to follow their mother out of the den, although they do not travel with her as she roams her territory until they are older. The cubs become independent around 18 months of age, but it is not until they are around 2–2½ years old that they leave their mother. Females reach sexual maturity at 3–4 years, whereas males reach sexual maturity at 4–5 years.Over the course of her life, a female tiger will give birth to an approximately equal number of male and female cubs. Tigers breed well in captivity, and the captive population in the United States may rival the wild population of the world.

India

India is home to the world's largest population of tigers in the wild. According to the World Wildlife Fund, of the 3,500 tigers around the world, 1,400 are found in India. Only 11% of original Indian tiger habitat remains, and it is becoming significantly fragmented and often degraded.
A major concerted conservation effort, known as Project Tiger, has been underway since 1973, initially spearheaded by Indira Gandhi. The fundamental accomplishment has been the establishment of over 25 well-monitored tiger reserves in reclaimed land where human development is categorically forbidden. The program has been credited with tripling the number of wild Bengal tigers from roughly 1,200 in 1973 to over 3,500 in the 1990s. However, a tiger census carried out in 2007, whose report was published on February 12, 2008, stated that the wild tiger population in India declined by 60% to approximately 1,411. It is noted in the report that the decrease of tiger population can be attributed directly to poaching.
Following the release of the report, the Indian government pledged $153 million to further fund the Project Tiger initiative, set up a Tiger Protection Force to combat poachers, and fund the relocation of up to 200,000 villagers to minimise human-tiger interaction. Additionally, eight new tiger reserves in India were set up. Indian officials successfully started a project to reintroduce the tigers into the Sariska Tiger Reserve. The Ranthambore National Park is often cited as a major success by Indian officials against poaching. In 2011 the census found 1,706 tigers Page text.
Tigers Forever is a collaboration between the Wildlife Conservation Society and Panthera Corporation to serve as both a science-based action plan and a business model to ensure that tigers live in the wild forever. Initial field sites of Tigers Forever include the world’s largest tiger reserve, the 21,756 km² Hukaung Valley in Myanmar, the Western Ghats in India, Thailand’s Huai Khai Khaeng-Thung Yai protected areas, and other sites in Laos PDR, Cambodia, the Russian Far East and China covering approximately 260,000 km2 of critical tiger habitat.

Current Status of Tiger in India

India holds over half the world's tiger population. According to the latest tiger census report released on March 28, 2011 by the National Tiger Conservation Authority, the current tiger population estimated is 1,706 (i.e. ranging between a minimum of 1,571 to a maximum of 1,875). The results include figures from 17 Indian states with a tiger population.
In 2008 the tiger population figure stood at 1,411. The Tiger Census 2008 report had classified the tiger occupied forests in India into 6 landscape complexes; namely (a) Shivalik-Gangetic Plains, (b) Central Indian Landscape Complex (c) Eastern Ghats, (d) Western Ghats, (e) North-Eastern Hills and Bhramaputra Plains, and (f) Sunderbans.
Within the Shivalik-Gangetic plain landscape, it was reported that the tiger occupies 5080 km2 of forested habitats with an estimated population size of 297 (259 to 335) in six separate populations. In the Central Indian Landscape, tiger presence was then reported from 47,122 km2 (11.6 % of forests) with an estimated tiger population of 451 (347 to 564) distributed in 17 populations. The Eastern Ghat landscape complex had about 15,000 km2 of potential tiger habitat. Tigers occupied 7,772 km2 of forested habitats with an estimated population size of 53 (49 to 57). Tigers occupied 21,435 km2 of forests within the Western Ghat Landscape comprising 21% of the forested area. The current potential tiger habitat in the landscape complex is about 51,000 km2. The population estimate for this landscape was 366 (297-434) tigers. North-Eastern hills and Bhramaputra plains reported tiger occupancy in 4230 km2 of forests. Many of the tiger populations, particularly those outside protected reserves, are fragmented, suffer from intense poaching pressure, a dwindling prey base and over-used habitat.
The strategy for tiger conservation in India revolves around the National Tiger Conservation Authority and the Wildlife (Protection) Act, 1972. Between the mid 1970's and mid-1980's, many protected areas (66 national parks and 421 wildlife sanctuaries) were set aside, including large tracts of tiger habitat. They were later increased to 102 national parks, 515 wildlife sanctuaries and 44 conservation reserves and 4 community reserves. This resulted in an increase in tiger densities at many locations. Rampant poaching for the trade in tiger parts - all destined for markets outside India's borders - now threatens the tiger's very existence.
Prevailing conservation efforts are not geared towards, nor have they adequately addressed, the new threats with new protection strategies ie. better law enforcement, training and support. Excellent new tiger protection measures (such as the recommendations of the (Subramanian Committee for the Prevention of Illegal Trade in Wildlife, 1994 and Tiger Task Force, 2005) have been proposed but not implemented or little effective action has been taken in the field. Few of the tiger reserves have an established intelligence network and most of our tiger reserves do not have an armed strike force or basic infrastructure and equipment to combat poaching. The forest guards are often out-gunned and out-manned by poachers. Several cases of murder and serious assault on forest guards on duty have been reported recently.

The last meeting of the National Board of Wildlife was held on 18 March 2010. Large development projects, such as mining, thermal and hydroelectric dams, are also taking their toll on the tiger's habitat. In the past ten years, thousands of square kilometres of forest land have been diverted and destroyed to facilitate such projects. Though mostly outside the protected network, the loss of this vital habitat will have serious repercussions on tiger conservation in India.

Since 1994, WPSI has made a concerted effort to gather accurate information on tiger poaching occurring throughout India. A total of 923 tigers are known to have been killed from 1994 to 2010. WPSIs extensive database of tigers poached has detailed information on poaching figures collected by us. These figures, however, are reported cases and represent only a fraction of the actual poaching activity in India.
An undercover investigation by the Wildlife Protection Society of India (WPSI) and the Environmental Investigation Agency (EIA) in 2005 revealed that the trade in tiger and leopard body parts in China continues to thrive, operating without any hindrance from the Chinese government whilst driving India’s wild tigers closer towards extinction. (For more information, please refer to  Status of Tiger and Leopard   ,  Skinning The Cat (5mb) download video (5mb) requires Real Player)
Despite all these problems, India still holds the best chance for saving the tiger in the wild. Tigers occur in 17 States within the Republic of India, with 7 States reportedly having populations in excess of 100 tigers. There are still areas with relatively large tiger populations and extensive tracts of protected habitat. Adequate funding and international pressure will help. But probably the most effective way to implement tiger conservation action in India today is to enhance NGO participation. There are a number of dedicated organisations that are effectively involved in hands-on tiger conservation. They keep the issue energized on a national level and tenaciously try to increase political will to secure the tiger's future. The Indian conservation and scientific community is now a proven force. It needs to be strengthened.


World's favourite animal
In a poll conducted by Animal Planet, the tiger was voted the world's favourite animal, narrowly beating the dog. More than 50,000 viewers from 73 countries voted in the poll. Tigers received 21% of the vote, dogs 20%, dolphins 13%, horses 10%, lions 9%, snakes 8%, followed by elephants, chimpanzees, orangutans and whales


Sortable list of Tiger Reserves in India 
State
Tiger Reserves
Year Estd.
#
Total Area (km2)
Management status
Remarks
2006
32
859
good
Good tiger density
1973-74
4
2840
poor
Poor tiger density, Recovering from prolonged disturbance due to Bodo unrest
1999–2000
27
344
satisfactory
Encroachment and tree cutting by locals
1982-83
15
1985
poor
Low tiger density, Extremism , encroachment byLisus
1999–2000
26
862
good
Good tiger density
1982-83
14
3568
poor
Low tiger densityLeft wing extremism(Naxalite)
1989-90
18
840
Poor
Low tiger density extremism
1982-83
13
2799
poor
Severely affected by Naxalites, Out of bounds
2000

2899
poor
1973-74
6
1026
Poor
Low tiger density, Left wing extremism
1973-74
1
866
good
Good tiger density
1999–2000
37
643
good
Good tiger density
1998-99
24
492
satisfactory
Low tiger density
1978-79
10
925
good
There are an estimated 53 tigers(2010) in the reserve.
2008-09
29
1019
good
Moderate tiger density
1993-94
21
1162
good
Good tiger density
1999–2000
28
1486
satisfactory
Poor tiger density
1973-74
3
1945
good
Good tiger density
1994-95
22
542
poor
Recovering from local extinction of tiger due to poaching. Dacoit infestation.
1992-93
19
758
good
Good tiger density
1973-74
5
1677
poor
Low tiger density
1998-99
25
257
satisfactory
Moderate tiger density
1993-94
20
620
satisfactory
Moderate tiger density, High rate of man tiger conflicts
2008
39
569

9 tigers (2007)
1994-95
23
5 00
poor
Low tiger density due to ecological reasons
1973-74
8
2750
poor
Iow tiger density, Left wing extremism
1973-74
7
1334
good
Good tiger density
1978-79
11
866
poor
Recovering from local extinction of tiger due to poaching
1988-89
17
800
satisfactory
Low tiger density due to ecological reasons
2007
36
321
satisfactory
Moderate tiger density
2010
38
391
good
Moderate tiger density
1987-88
16
811
satisfactory
Good tiger density, Poaching along borders
1973-74
2
1316
good
Good tiger density
1982-83
12
759
poor
Low tiger density offences by jobless tea plantation workers
1973-74
9
2585
good
Good tiger density
2008-09
30
1580
poor
Low tiger density
2007
31
988
poor
Low tiger density
2008
33
963
poor
Low tiger density
2007
34
875
satisfactory
Low tiger density
2008
35
831
poor
Very low tiger density
1978

104

not a Project Tiger reserve
2010 (pro)
47
524

46 tigers (2010)
2010
40
540

17 tigers (2005)
2011
41
360

20 tigers (2010)
2011
42
893

20 tigers (2010)
2011 (pro)
48



2011 pro)
49



2010 In-principle approval
43
1089


2010 In-principle approval
44
856


2010 In-principle approval
45
674


2010 (pro)
50



Mukundara Hills Tiger Reserve
2011 In-principle approval

46