Animal Tracks: Holiday edition

An orangutan opens a Christmas gift at the Zoo of Rio de Janeiro, Brazil, on December 23.

A dolphin carries a present to its trainer during a special Christmas show at the Shinagawa Aqua Stadium in Tokyo on December 23.

A zookeeper in a Santa Claus costume feeds ring-tailed lemurs at Tokyo's Ueno Zoological Garden on December 23.

A baby lion named Dominjun, center, and a baby tiger named Jangbori wear Santa hats at the Everland Amusement Park in Seoul, Korea, on December 23.

A polar bear nibbles on fruit snacks hanging on a Christmas tree at Hannover Zoo in Germany, on December 22.

A diver dressed as Santa Claus feeds rays and fish for a special underwater show at Sunshine Aquarium in Tokyo, Japan, on December 22.

A sea lion balances a Christmas tree on his nose at the Aqua Stadium aquarium in Tokyo, on December 22.

A baby orangutan plays with a Santa Claus outfit at the zoo in Dvur Kralove nad Labem, Czech Republic, on December 21.

A man with his dog dressed as Father Frost run during the 'Happy Run' charitable race in Moscow, Russia, on December 21. More than 500 runners took part in the event where all raised money will go to the treatment of seriously ill children.

An Aymara indigenous woman carries her pet to a Christmas costume contest for dogs in El Alto, Bolivia, on December 20.

Two dogs lick each other during a Christmas costume contest for dogs in El Alto, Bolivia, on December 20.

A man dressed as Santa Claus plays with a king penguin at the animal exhibition park Marineland in Antibes, France, on December 19.

A chimpanzee stands by a Christmas tree during the 'Christmas with the Chimps' event at Lion Country Safari in West Palm Beach, Florida, on December 18.

Tian Tian, a giant panda prepares to eat a special Christmas panda cake crafted in the shape of a Christmas tree at the Edinburgh Zoo in Scotland, on December 17.

A white beluga wears a Santa hat at the Hakkeijima Sea Paradise Aquarium in Yokohama,Tokyo, on December 17.

A diver wearing a Santa Claus costume feeds a sunfish at the Hakkeijima Sea Paradise aquarium in Yokohama, Tokyo, on December 17.

Taronga Zoo's 15-month-old chimpanzee Fumo opens one of his Christmas presents in Sydney, on December 9.

A dog with a Santa Claus hat takes part in the first Athens 'Santa Claus Run' in the city's center, on December 7.

Rocky the dog poses with Santa Claus during the Nassau Humane Society’s 15th Annual Parade of Paw in Fernandina Beach, Florida, on December 6.

An employee of a local zoo, dressed as Santa Claus, walks with a reindeer while marking the upcoming Christmas and New Year's celebrations in Krasnoyarsk, Russia, on December 5.

Midwestern State University students Heather Skelton, left, and Pooja Patel, center, enjoy petting therapy dogs provided by the Obedience Training Club of Wichita Falls, Texas, on December 3.

Marnie the dog wears a holiday sweater in chilly New York City, on November 29.