In this photo released by the Blair Drummond Safari Park, a rhino calf named Ailsa is seen with its keeper Ailsa West, right, as it is weighed at the Blair Drummond Safari Park in Stirling, Scotland, Thursday, Feb. 4, 2010. Ailsa is one of eight southern white rhinos born in captivity in Europe last year and there are an estimated 11,000 in the wild, according to the International Union for the Conservation of Nature. (AP Photo/Blair Drummond Safari Park)
Workers secure the Federal Express cargo plane, called the “FedEx Panda Express”, as it arrives at Atlanta’s Hartsfield Jackson-International Airport Thursday, Feb. 4, 2010 to take Mei Lan, a 3-year-old female giant panda from Zoo Atlanta, to China. Mei Lan is Zoo Atlanta’s firstborn giant panda. Before heading to China, the plane will make a stop in Washington, D.C., where it will pick up Tai Shan, a 4-year-old male giant panda born at the National Zoo. The two giant pandas will become part of a breeding program in their endangered species’ native land. (AP Photo/Rich Addicks)
Panda Tai Shan, 4, is seen on his last day at the National Zoo in Washington, on Wednesday, Feb. 3, 2010. Tai Shan, who was born at the zoo in 2005, will be sent to China on Thursday to become part of a breeding program. Under the Smithsonian’s panda loan agreement, any cub born at the zoo must be returned to China for breeding. (AP Photo/Jacquelyn Martin)
Mei Xiang, mother of 4-year-old panda Tai Shan, rolls herself down a snowy hill on Tai Shan’s last day at the National Zoo in Washington, on Wednesday, Feb. 3, 2010. Tai Shan, who was born at the zoo in 2005, will be sent to China on Thursday to become part of a breeding program. Under the Smithsonian’s panda loan agreement, any cub born at the zoo must be returned to China for breeding. (AP Photo/Jacquelyn Martin)
In this Aug. 27, 2007 file photo, Mei Lan, the only giant panda cub to be born in a U.S. zoo in 2006 is shown at Zoo Atlanta in Atlanta, Georgia. Chinese zookeepers are advertising for a tutor to teach Chinese to the American-born giant panda arriving this week in her parents’ homeland. The language lessons, a special diet and even blind dates are also part of the red-carpet welcome being rolled out for 3-year-old Mei Lan, or Beautiful Orchid, by Chinese caretakers ahead of her arrival Friday, Feb. 5, 2010. (AP Photo/Gene Blythe, File)
Father Juan Villar blesses a ferret at the San Anton church during the feast of St. Anthony, Spain’s patron saint of animals, in Madrid, Sunday, Jan. 17, 2010. The feast is celebrated each year in many parts of Spain and people bring their pets to churches to be blessed. (AP Photo/Arturo Rodriguez)
A man rides a horse through a bonfire in San Bartolome de Pinares, Spain, Saturday, Jan. 16, 2010, in honor of Saint Anthony, the patron saint of animals. (AP Photo/Daniel Ochoa de Olza)
A man rides a horse through a bonfire in San Bartolome de Pinares, Spain, Saturday, Jan. 16, 2010, in honor of Saint Anthony, the patron saint of animals. (AP Photo/Daniel Ochoa de Olza)
Elephants feed on a Christmas tree in their enclosure at the Schoenbrunn zoo in Vienna, on Monday, Jan. 11, 2010. (AP Photo/Ronald Zak)
Ricky the Rockhopper penguin (Eudyptes chrysocome) is counted during the annual stocktaking at London Zoo, Tuesday, Jan. 5, 2010. More than 750 different species are tallied up in the count. (AP Photo/Kirsty Wigglesworth)
Mammal keeper Lucy Smith counts coatis (Nasua nasua) during the annual stocktaking at London Zoo, Tuesday, Jan. 5, 2010. More than 750 different species are tallied up in the count. (AP Photo/Kirsty Wigglesworth)
A panda caretaker catches a panda to be sent from Sichuan to Shanghai for the World Expo, at the Bifengxia Panda Base in Ya’an, in southwest China’s Sichuan province, Tuesday, Jan. 5, 2010. Ten giant panda cubs, all born after the deadly earthquake that hit Sichuan province in 2008, were on their way Tuesday to Shanghai to go on display for this year’s World Expo, a spokeswoman for the Shanghai Zoo said. (AP Photo)
The new eight-month-old liger Sierra at the Safari Zoo in Reno, Nevada, licks a piece of ice while investigating her new surroundings on Monday, Jan. 4, 2010. The animal, a mix between a lion and a tiger, was recently donated to the zoo to replace one that died in 2007. There are 20 in the United States. (AP Photo/Reno Gazette-Journal, David B. Parker)
Suricates (Suricata suricatta), also known as meerkats, seen seated by a heating lamp in a zoo in Freiburg, southern Germany, Monday, Dec. 28, 2009. (AP Photo/ Winfried Rothermel)








