BRITAIN-ZOO-TIGERS(01 of11)
Open Image ModalJae Jae, a male Sumatran tiger, sits in a pond in the new tiger enclosure at the London Zoo in central London on March 20, 2013. Housing one male and one female Sumatran tigers, the enclosure is five times larger than the previous enclosure, at 2,500sqm. AFP PHOTO/CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images) (credit:Getty Images)
A polar bear swims in his enclosure at t(02 of11)
Open Image ModalA polar bear swims in his enclosure at the Moscow Zoo, on November 18, 2010. AFP PHOTO / NATALIA KOLESNIKOVA (Photo credit should read NATALIA KOLESNIKOVA/AFP/Getty Images) (credit:Getty Images)
A monkey swims in the Bagamti river to b(03 of11)
Open Image ModalA monkey swims in the Bagamti river to beat the summer heat in Kathmandu on May 25, 2012. Temperatures in the Nepalese capital are rising with the onset of summer. AFP PHOTO/Prakash MATHEMA (Photo credit should read PRAKASH MATHEMA/AFP/GettyImages) (credit:Getty Images)
A young lion cub tries to swim in the mo(04 of11)
Open Image ModalA young lion cub tries to swim in the moat surrounding the lion habitat at the Smithsonian Institution's National Zoo on October 26, 2010 in Washington, DC. The staff at the zoo is conducting swim tests on four cubs, placing the cubs one at a time into the water, to ensure that the cubs can safely maneuver the moat before they are let out into the yard with their mother later this year. AFP PHOTO/Karen BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images) (credit:Getty Images)
Rare White Tiger Swims For His Supper(05 of11)
Open Image ModalVALLEJO, CA - JUNE 1: Odin, a five year-old White Bengal Tiger dives for a piece of meat thrown to him by a trainer during a big cat show at Six Flags Discovery Kingdom June 1, 2007 in Vallejo, California. Unlike most cats that are afraid of water, Odin loves diving in the pool to retrieve bits of meat fed to him by his trainers. (Photo by Justin Sullivan/Getty Images) (credit:Getty Images)
(06 of11)
Open Image ModalA visitor to the Kuala Gandah Elephant Conservation Center in Malaysia reacts as she is splashed by fellow visitors while swimming with a baby elephant, Thursday, May 24, 2012. The conservation centrer is responsible for the translocation of elephants from areas of human encroachment in peninsular Malaysia as well as home to orphaned elephants that were not part of the 600 relocated since it's inception in 1989. (AP Photo/Mark Baker) (credit:AP)
Animals - Giant Panda - London Zoo(07 of11)
Open Image ModalLien-ho, London Zoo's giant panda, in a bath tub of cold water to cool off from the summer heat. (credit:PA)
Pooch Hotel Hollywood Grand Opening(08 of11)
Open Image ModalHOLLYWOOD, CA - MAY 03: A dog swims in a pool for dogs at the grand opening of the fourth Pooch Hotel on May 3, 2012 in Hollywood, California. The Pooch Hotel is billed as a luxury hotel and daycare exclusively for dogs, first started in Chicago in 2004 and purchased by PETCO in 2011. (Photo by David McNew/Getty Images) (credit:Getty Images)
SINGAPORE-ANIMAL-ZOO-POLAR BEAR(09 of11)
Open Image ModalVisitors take photographs of 'Inuka', a male polar bear, as he swims in its pool enclosure at the Singapore Zoo on May 29, 2013. The 22-year-old polar bear, the first one born in the tropics, moved into his new frozen tundra home on May 29 in a 2,700 square metre exhibit featuring climate controlled resting areas and an expanded pool. AFP PHOTO / ROSLAN RAHMAN (Photo credit should read ROSLAN RAHMAN/AFP/Getty Images) (credit:Getty Images)
(10 of11)
Open Image Modal (credit:Alamy)
(11 of11)
Open Image Modal (credit:Alamy)