Chimpanzee and Tiger Cub

Two-year-old chimpanzee "Do Do" feeds milk to "Aorn", a 60-day-old tiger cub, at Samut Prakan Crocodile Farm and Zoo.

Siberian tigers

Siberian tigers sit up gesturing to visitors during a show at a zoo on the second day of the Lunar New Year in China.

Two-month old tiger cubs

Two-month old tiger cubs are dressed up in Chinese outfits while waiting to join visitors celebrating Chinese New Year of the Tiger at the Sri Racha Tiger Zoo in southeatern Thailand.

Indochinese tiger

An Indochinese tiger, found mainly in Malaysia and Thailand, at a zoo in Kuala Lumpur.

A white tiger

A white tiger rests inside an enclosure at Beijing Zoo, China. There are fewer than 50 wild tigers left in China today, living in Yunnan, Tibet.

A female Sumatran Tiger

A female Sumatran Tiger, gives an affectionate lick to one of her cubs at Sydney's Taronga Zoo.

Kashmir, a female white Bengal tiger

Kashmir, a 17-year-old female white Bengal tiger, is not quite sure what to make of the red Christmas bow tied to her collar at Six Flags Discovery Kingdom in California.

Indochinese tiger

An Indochinese tiger found mainly in Malaysia and Thailand drinking water from a pond at the national zoo in Kuala Lumpur.

White Bengal tiger

White Bengal tiger sticks out his tongue at Dusit Zoo in Bangkok, Thailand.

Siberian Tiger Tinka

Siberian Tiger Tinka, plays in the snow at the zoo in Servion near Lausanne, Switzerland.

Bengal tiger meets bottlenose dolphin

Mavrick, a 14-month-old male Atlantic bottlenose dolphin, blows a mass of bubbles while checking out Akaasha, a six-month-old female Bengal tiger.

Amur tigers

Amur tigers relax at the Buffalo Zoo in Buffalo, N.Y. From New York to Los Angeles, hard financial times are threatening government support for zoos, aquariums and gardens.

Bengal tiger cubs

Bengal tiger cubs Jasmine and Jafarh rest following feeding at the Saskatoon Zoo in Saskatoon. The tigers' mother Rani didn't have milk, so the cubs, just over one month old, are currently cared for by zoo keepers.

Indian white tiger

An Indian white tiger drinks water from a pond in its enclosure at the Zoological Park in New Delhi.

Dog feeds tiger cubs

A dog feeds two Siberian tiger cubs and her puppy at a zoo in Hefei, Anhui Province. The mother of the tiger cubs was not able to feed them after giving birth, China Daily reported.

Siberian tiger

A Siberian tiger, at a zoo in Austria. A tiger has mauled a zookeeper to death in western Japan.

Tasmanian tiger

Scientists have broughtback to life a gene from the extinct Tasmanian tiger, seen here, after implanting it in a mouse.

A Tiger at the Ranthambore National Park

Fourteen tiger cubs have been spotted in Ranthambore, a rare piece of good news in the country's fight to protect its dwindling population of big cats from poachers and habitat destruction.

Sumatran tigers

A 6-week-old, 12 pound baby Sumatran tiger is watched by his 5-year-old mother Leanne, in the outdoor exhibit at the San Francisco Zoo. His mom delivered triplet male cubs on March 7. She debuted them today, one at a time, in the outdoor public exhibit.

Baby Sumatran tiger sits in the outdoor exhibit.

'Rare' tiger snapped in China

A Siberian tiger at a park in Harbin. A tiger snapped in central China initially thought to be a very rare species has been identified as a more common Siberian one which escaped from a circus.