A polar bear opens a package filled with food and wrapped as a Christmas gift at the zoo in La Fleche, western France, on December 23, 2013. (Photo by Jean-Francois Monier/AFP Photo)

A Chimpanzee opens its Christmas presents at ZSL Whipsnade Zoo on December 17, 2013 in Bedfordshire, England. (Photo by Tony Margiocchi/Barcroft Media)

Santa Claus feeds a shark during a visit to the Manly Sea Life Sanctuary on December 18, 2013 in Sydney, Australia. (Photo by Lisa Maree Williams/Getty Images)

Meerkats at Whipsnade Zoo prepare for Santa's imminent arrival by hanging up their Christmas stockings, Bedfordshire, England. (Photo by Tony Margiocchi/Barcroft Media)

A racoon plays with a christmas present at Hanover Zoo on December 20, 2013 in Hanover, Germany. (Photo by Nigel Treblin/Getty Images)

Military dog Hazel is delighted with her present from her handler Private Zina Saunders in Afghanistan. (Photo by Ben Birchall/PA Wire)

Private Zina Saunders, a dog handler with 1 Military Working Dogs, gives Hazel, who works as a search dog Christmas presents which were sent by the handler's friends and family in the UK on December, 19, 2013. (Photo by Ben Birchall/PA Wire)

Kangaroos inspect a Christmas stocking at Taronga Zoo on December 20, 2013 in Sydney, Australia. Animals received Christmas themed treats and puzzles as part of Christmas festivities. (Photo by Brendon Thorne/Getty Images)

A white lion tries to open a package filled with chicken meat and wrapped as a Christmas gift at the zoo in La Fleche, western France, on December 23, 2013. (Photo by Jean-Francois Monier/AFP Photo)

A dolphin leaps out of the water to pass a “gift” package to an animal trainer wearing a Santa Claus costume during a show at the Aqua Stadium aquarium in Tokyo on December 18, 2013. (Photo by Yoshikazu Tsuno/AFP Photo)

Two ring-tailed lemurs are having a cracking time at Folly Farm and Adventure Zoo in Wales. (Photo by James Davies /PA Wire)

A chimpanzee opens a package filled with treats and wrapped as a Christmas gift at the zoo in La Fleche, western France, on December 23, 2013. (Photo by Jean-Francois Monier/AFP Photo)

Suricate play with a christmas present at Hanover Zoo on December 20, 2013 in Hanover, Germany. Keepers at the zoo gave the some of the animals Christmas presents containing festive treats during a photocall. (Photo by Nigel Treblin/Getty Images)