AP Photo/Matt Dunham
A new baby Asian elephant is seen during a photocall at England's Whipsnade Zoo, Tuesday, July 28, 2009. The six-day-old newborn weighed in at 126 kilograms (278 pounds) and has yet to be named by the zoo.
AP Photo/Sakchai Lalit
Two hippopotamuses play together at Dusit Zoo in Bangkok on Monday, July 27, 2009.
AP Photo/Jens Meyer
A female zebra calf stands next to its mother at Erfurt zoo, central Germany, Friday, July 17, 2009. The zebra was born on July 8, 2009.
AP Photo/Sakchai Lalit
A White Bengal tiger yawns at the Dusit Zoo in Bangkok on Thursday, July 16, 2009.
AP Photo/Michael Sohn
A male snow leopard cub named Altai yawns during its official presentation at the zoo in Berlin, Friday, July 10, 2009. Altai was born on April 25, 2009.
AP Photo/Heribert Proepper
A seal pup eats a herring at the seal station in Friedrichskoog, northern Germany, on Wednesday, July 8, 2009.
AP Photo/Wichai Taprieu
An unnamed 4-week-old giant panda cub sleeps on the chest of its 7-year-old mother, Lin Hui, at Thailand's Chiang Mai Zoo in the Chiang Mai province, Thursday, June 25, 2009.
AP
A 50-day-old baby Black rhinoceros, yet to be named, is seen near her mother Argo, at Ueno Zoo in Tokyo, Friday, June 12, 2009.
Peter Byrne/PA Wire
A young Rhino takes a stroll at Knowsley Safari Park.
AP Photo/Maya Hitij
A black panther cub prowls in the grass at the Tierpark zoo, during a presentation to the media in Berlin, Tuesday June 9, 2009.
AP
Herons cool in a drying pond in Gurgaon, India, Monday, June 8, 2009.
AP Photo/Victor R. Caivano
A rare new white rhino calf lies next to its mother during its debut at the Madrid Zoo on Thursday, June 4, 2009.
AP Photo/Channi Anand
A wildlife worker bathes a two-month-old leopard cub on a hot summer day at Manda Park in Jammu, India, on Tuesday, June 2, 2009.
AP Photo/Heribert Proepper
The first seal pup of this season takes a sun bath at the pool at the common seal station in Friedrichskoog, northern Germany, on Friday, May 29, 2009.
AP Photo/Keystone, Dominic Favre
A bar-headed goose walks with one of her day old her chicks at the zoo of Servion near Lausanne, Switzerland, Wednesday, May 27, 2009.
AP Photo/Gero Breloer
Newborn triplet jaguar cubs are seen at the Tierpark Zoo in Berlin on Tuesday, May 19, 2009. The three cubs were born on April 16 and are named Atiero, Jumanes and Valdivia.
AP Photo/Geert Vanden Wijngaert
Newborn baby elephant Kai-Mook takes her first steps together with her mother Phyo Phyo, right, half sister May Tagu, second left, and aunt Yu Yu Yin at the elephant residence at the zoo in Antwerp, Belgium, Tuesday, May 19, 2009. Kai-Mook was born on May 17, 2009.
AP Photo/Luis Benavides
An Aotus lemurinus, known as an owl monkey, carries its one-month-old baby on its back after it was born in captivity at the zoo in Medellin, Colombia, Tuesday, May 19, 2009.
AP Photo/Paul Thomas
A two-week-old Bornean Orangutan named Iznee, left, is seen in the arms of her mother, Sarikei, inside their enclosure at Chester Zoo in Chester, England, Monday, May 18, 2009.
AP Photo/Maya Hitij
Giraffe calf Shani is seen with her father Naruk, left, and mother Kibaya, right, at the Berlin Zoo on Friday, May 15, 2009. Shani was born on May 3.