Oink, OinkHogs are seen at a finishing facility run by Kenny Brinker and his brother Dale Brinker near their farm in Auxvasse, Mo. The hogs are monitored daily by farm hands for any signs of disease including fast breathing, coughing and sneezing. (AP Photo/Jeff Roberson)
Silhouetted GoatGoats are silhouetted against the sky as they stand on a meadow of an ecological farm in Stolpen, eastern Germany. (AP Photo/Matthias Rietschel)
Baby ZebraA young zebra stands next to her mother at the Berlin zoo. Three baby zebras were born in May and June 2009. (AP Photo/Maya Hitij)
Cooling OffA brown male bear named Karamush tries to stay cool at a lake at the Black Sea town of Varna's zoo, east of the Bulgarian capital Sofia. (AP Photo/Petar Petrov)
German RabbitA rabbit is pictured in the zoo 'Hagenbeck' in Hamburg, Germany. (AP Photo/Axel Heimken)
Pretty BirdA peacock spreads its feathers at Alipur zoo in Calcutta, India.(AP Photo/Sucheta Das)
Hi, PeteDavid Lawrence talks to Pete the moose in Irasburg, Vt., Thursday, July 30, 2009. Pete was raised by 73-year-old Lawrence, who nursed the then-newborn moose back to health after Pete had been injured by dogs. (AP Photo/Toby Talbot)
Jaguar TripletsNewborn Jaguar triplets are presented to the media at the Tierpark Zoo in Berlin. The three cubs were born on April 16 and named Atiero, Jumanes and Valdivia. (AP Photo/Gero Breloer)
A Painted LadyA Painted Lady butterfly sits on a blossom in the sunshine in Berlin. (AP Photo/Franka Bruns)
Mama MonkeyA monkey mother holds her baby in a zoo in Freiburg, southern Germany, on Wednesday, Sept. 2 , 2009. The weather is friendly and warm. (AP Photo/ Winfried Rothermel)
YawnWhite Bengal tiger sticks out his tongue at Dusit Zoo in Bangkok, Thailand, on Thursday July 16, 2009. (AP Photo/Sakchai Lalit)
Baby JumaaneTwo-year old orphaned African elephant baby Jumaane tosses with his trunk the back of his mother Yoki, 19, in the Nyiregyhaza Animal Park in Nyiregyhaza, 245 kms east of Budapest, Hungary, Friday, Aug. 21, 2009. (AP Photo/MTI, Attila Balazs)
Saint Bernard Pu...Hera, a Saint Bernard dog, sits next to some of her nine puppies at the Barry Foundation in Martigny, Switzerland, Wednesday, Aug. 26, 2009. The nine puppies were born on July 28, 2009. (AP Photo/Keystone, Olivier Maire)
Nap TimeA 7-week old giant panda cub sleeps on the floor of its enclosure at the Chiang Mai zoo in Chiang Mai province northern Thailand Monday, July 13, 2009. (AP Photo/Wichai Taprieu)
Inuka Under Wate...Nineteen-year-old polar bear Inuka catches live bait at the Singapore Zoo on Tuesday Sept. 1, 2009, in Singapore. The Singapore Zoo's male polar bear is the first and only of its kind to be born in the tropics. (AP Photo/Wong Maye-e)
Good Weather9 year old Laura Wimmer is seen with a cow on Monday, Aug. 31, 2009 on the Loferer alp, Austrian province of Salzburg. Weather forecasts predict good weather for the next days. (AP Photo/ Kerstin Joensson)
Green IguanaA man feeds a green iguana on display at an exotic animal exhibition cooled cucumber during a warm weather in the town of Sevlievo, east of the Bulgarian capital Sofia, Wednesday, Aug, 26, 2009. (AP Photo/Petar Petrov)
Welcome HomeA new born black panther cub stands in the grass at the Tierpark zoo during a presentation to the media in Berlin, Germany, Tuesday June 9, 2009. Female black panther cubs named Larisa and Sipura were born on April 26, 2009, at the Tierpark. (AP Photo/Maya Hitij)
Talking to Me?A young giraffe looks up between others at a zoo in Gelsenkirchen, western Germany, Tuesday, May 26, 2009. (AP Photo/Martin Meissner)
Panda CubLin Hui, a 7-year old panda, and its two-days-old cub are seen at the Chiang Mai Zoo in Chiang Mai, northern Thailand, Friday, May 29, 2009. The cub whose birth surprised Thai zoo officials is a healthy female that appears to be bonding well with its much larger mother, Chinese experts concluded Thursday. (AP Photo/Wichai Taprieu)
HelloWilbaer, a 16 months old polar bear, plays with a piece of wood in the Wilhelma zoo in Stuttgart, Germany, Tuesday, May 5, 2009. Wilbaer, who was born in this zoo, will leave this zoo in the next weeks and move to the bear park Orsa in Gorenklitt, Sweden. (AP Photo/Thomas Kienzle)
Little Big DogA miniature bullterrier looks to the camera at a presentation for the international dog show in Dortmund, Germany, Thursday, April 23, 2009. About 10,000 pedigree dogs are expected from May 1-3 at the exhibition halls in Dortmund. (AP Photo/Martin Meissner)
Watchful EyeView of a young milan in the Bird Park Steinen in Steinen-Weitenau, southern Germany, Thursday, June 18, 2009.The bird is feeded and brought up by hand. (AP Photo/Winfried Rothermel)
In Your FaceOstriches seen at an ostrich farm in Hohenfelde at the Baltic Sea, northern Germany, on Thursday, April 16, 2009. (AP Photo/Heribert Proepper)
Tired ZebraA zebra yawns at Hagenbeck's zoo in Hamburg, Germany, on Thursday, April 16, 2009. (AP Photo/Fabian Bimmer)
Budding ArtistOrangutan Ujian looks at a painting it just painted at the zoo in Heidelberg, southwestern Germany, on Wednesday, May 6, 2009. The paintings of the Orangutans will be auctioned for the benefit of the zoo's monkey house. Ujian also is one of only few orangutans worldwide who can whistle as well. (AP Photo/Daniel Roland)
Hanging LangurA langur infant is seen in the zoo in Hanover, northern Germany, on Wednesday, Jan. 7, 2009. Two langurs were born during the last three weeks there. Langurs predominantly feed leaves. The zoo Hanover freezes leaves in summer to feed the langurs during winter time.(AP Photo/Joerg Sarbach)
Rescue MeA Thai zoo official feeds a baby pangolin milk at the Dusit Zoo in Bangkok, Thailand on Tuesday, June 9, 2009. The animal was handed over to the zoo when villagers found it abandoned on a road on the outskirts of Bangkok. (AP Photo/Sakchai Lalit)
Three's a CharmIn this photo taken Friday, June 19, 2009, red panda mom Shan Tou curls up with her triplet babies at the Red River Zoo in Fargo, N.D. The new babies are two females and one male. They were born June 11 at the zoo in Fargo. (AP Photo/The Forum, Carrie Snyder)
Pygmy BabyA 1-day old pygmy hippo baby is seen in an enclosure at the Singapore Zoo, Friday June 5, 2009 in Singapore. The Singapore Zoo has been successful with breeding its animals in captivity and consistently runs programs educating the public about wildlife conservation.(AP Photo/Wong Maye-E)
Growl FaceA Javan leopard growls inside a cage prior to its release into the wild in Kaduhejo, Banten province, Indonesia, in this Thursday, June 18, 2009 photo. The endangered leopard was rescued by environmental activists and members of Indonesian Natural Conservation Agency (BKSDA) after it was caught in a villagers' boar trap last year. It is believed there are less than 300 Javan leopards left in the wild mainly due to habitat loss and poaching. (AP Photo/Tatan Syuflana)
Monkeying AroundA chimpanzee baby stands at a window at the zoo ZOOM in Gelsenkirchen, western Germany, Thursday, April 2, 2009. The 91 million Euro close to nature zoo brings the landscape and animals from Africa, Alaska and Asia to the industrial ruhr valley in western Germany. (AP Photo/Martin Meissner)
Heads UpHasani, top, a six-month old western lowland gorilla, rides in the back of his surrogate mother Bawang at the San Francisco Zoo in San Francisco, Friday, June 5, 2009. Hasani, whos name means "handsome" in Swahili, is the first gorilla born in captivity at the zoo in 11 years. Bawang, who's 29 years old, became the baby gorilla's surrogate mother after his birth mother Monifa showed no interest in raising him. The western lowland gorilla's natural habitat is in Central Africa. It is currently on the critically endangered list. (AP Photo/Marcio Jose Sanchez)
Baby LoveAn unnamed four-week old giant panda cub sleeps on the chest of its seven-year old mother, Lin Hui, at Thailand's Chiang Mai zoo in Chiang Mai province, Thursday, June 25, 2009. (AP Photo/Wichai Taprieu)
Just SwingingA gorilla swings on a rope in its exhibit at the Franklin Park Zoo, Thursday, Feb. 5, 2009 in Boston. Not long ago, zoos thought keeping animals alive and healthy meant serving food in bowls and giving them limited physical activities out of fear of injury. Now all of the nation's zoos have enrichment programs of some kind, some even mandated by the federal government. (AP Photo/Mary Schwalm)
Pink all OverWaterdrops fall down from the beak of a flamingo in the zoo 'Hagenbeck' in Hamburg, Germany, on Thursday, June. 18, 2009. (AP Photo/Axel Heimken)
Lazy LionAn Indian lion (Panthera leo persica) dozes in the sun in the zoo of Zurich, Switzerland, Wednesday, June 3, 2009. (AP Photo/Keystone, Steffen Schmidt)
Big BabyA young wild boar is bottle-fed by a warden in the Steinwasen zoo, near Freiburg, southern Germany, on Tuesday, June 9, 2009. The animal lost its pack after birth and so it is raised with the bottle. (AP Photo/ Winfried Rothermel)
Colorful Visitor'Kusi', a Yellow-Collared Macaw from the Rio Grande Zoo in Albuquerque, visits children and adults at the Roswell Public Library in Roswell, N.M. on Wednesday, June 3, 2009 as part of the "Zoo to You" program presented by the Bio Park Society. "Zoo to You" travels the state with a variety of exotic animals, educating along the way. (AP Photo/Roswell Daily Record, Mark Wilson)
Winter RestAn arctic fox rests at the zoo of Servion near Lausanne, Switzerland, Wednesday, May 27, 2009. (AP Photo/Keystone, Dominic Favre)
A New HomeA zookeeper feeds a one-year-old wild baby elephant at Assam Zoological Park in Gauhati, India, Sunday, June 7, 2009. The forest department found this baby elephant abandoned by a herd of wild elephants in Boko area about 70 kilometers (43 miles) west of Gauhati. (AP Photo/Anupam Nath)
Extra PushA greater flamingo chick, Phoenicopterus roseus, is propelled by its mother in their enclosure in the Budapest Zoo in Budapest, Hungary, 5 June 2009. With fifteen chicks hatched in the past few weeks the number of the greater flamingos has grown to 98 in the zoo. (AP Photo/MTI, Attila Kovacs)
Stretch BreakA cat relaxes in the morning sun on a terrace near Kiel, northern Germany, as temperatures reach 18 degrees Celsius (64.4 Fahrenheit) on Monday morning, June 1, 2009. (AP Photo/Heribert Proepper)
Pretty in PinkA flamingo rests in the morning sunshine at the Cleveland Metroparks Zoo in Cleveland, Ohio on Monday, June 22, 2009. (AP Photo/Amy Sancetta)
Young GobblerA turkey vulture (Cathartes aura) sits at the Westkuestenpark Zoo in St. Peter-Ording at the North Sea, northern Germany, on Thursday, May 4, 2009. The bird hatched two weeks ago. (AP Photo/Heribert Proepper)
Proud MamaNew white rhino calf, lies next to his mother, named Marina, background, at the Madrid Zoo, Thursday, June 4, 2009. The unnamed white rhino calf is only the third in the world to have been conceived through artificial insemination. (AP Photo/Victor R. Caivano)
Mother GooseA 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/Keystone, Dominic Favre)
When Bill Met La...Polar bears Bill, top, and Lara cuddle at their first meeting at the Zoom Erlebniswelt zoo in Gelsenkirchen, Germany, Friday, April 17, 2009. Polar bear Bill came from the zoo in Bruenn, Czech Republic, as a new partner for bear lady Lara to western Germany. After their passionate liaison, the zoo is hoping for little polar bears in the next years. (AP Photo/Martin Meissner)
A Mother's LoveThe bactrian camel pup "Klaro", left, spoons with his mother "Lilu", right, in the zoo Hellabrunn in Munich, southern Germany, on Tuesday, March 31, 2009. "Klaro" was born in the zoo in Munich on Jan. 4, 2009. (AP Photo/Christof Stache)
Hanging OutA baby moufflon of Corsica, born in early May enjoys the day with his mother at the zoo of Servion near Lausanne, Switzerland, Wednesday, May 27, 2009. (AP Photo/Keystone, Dominic Favre)
On the ProwlA snow leopard is seen in the new exhibit at the Central Park Zoo in New York, Thursday, June 11, 2009. The new exhibit houses three snow leopards and offers visitors a view of one of the most endangered big cats on the planet. (AP Photo/Seth Wenig)
Emu ChickAn emu chick is seen walking next to its father's legs in the Berlin zoo, Friday, April 24, 2009. The emu hatched on April 14, 2009. (AP Photo/Maya Hitij)
Baby KangarooA baby kangaroo named Tijana being fed from a bottle by a zoo keeper in Belgrade Zoo, Tuesday, April 21, 2009. Her mother, after being scared by an emu, a large Australian bird, ran away and 6-month-old Tijana fell out from the pouch. Now, the big-eyed baby kangaroo, which normally would feed on her mother's milk inside the pouch, is being fed in an incubator with special milk donated by Australia, the United States and Germany. The zoo keepers said Tijana will be fed from a bottle for the next couple of months before getting such food as rice and bananas. (AP Photo/Srdjan Ilic)
Hanging OutA Long-tailed macaque carries her young one under her as she waits on the banks of the mangroves in Kilim Karts Geoforest Park on Langkawi island in Malaysia, Thursday, April 16, 2009. Langkawi Geopark is Malaysia's first geopark and is located in the far northwestern corner of peninsular Malaysia. (AP Photo/Mark Baker)
Presidential Nes...A nest of baby robins begins to hatch in a nest in a bush by the White House Press Room at the White House in Washington, Thursday, April 23, 2009, (AP Photo/Ron Edmonds)