A 13-month-old chimp named Fumo carries a “Christmas present” of food treats in wrapping paper under his arm during a Christmas-themed feeding time at Sydney's Taronga Park Zoo, December 9, 2014. Fumo, meaning “chief” or “spear” in Swahili, is one of the latest additions to the zoo's successful primate breeding program. (Photo by Jason Reed/Reuters)

A 13-month-old chimp named Fumo leaps off a log with a “Christmas present” of food treats in wrapping paper during a Christmas-themed feeding time at Sydney's Taronga Park Zoo, December 9, 2014. (Photo by Jason Reed/Reuters)

A young giraffe uses its long tongue to reach into a container of carrots, a “Christmas present” food treat, during a Christmas-themed feeding session at Sydney's Taronga Park Zoo, December 9, 2014. The giraffe enclosure at the zoo has panoramic views of Sydney's harbour and allows visitors the chance to get close and feed the zoo's tallest animals which are native to Africa. (Photo by Jason Reed/Reuters)

Local TV reporter Samantha Brett attracts the attention of a young giraffe, as it eats a “Christmas present” of food treats, during a Christmas-themed feeding session at Sydney's Taronga Park Zoo, December 9, 2014. (Photo by Jason Reed/Reuters)

A 13-month-old chimp named Fumo throws shredded paper Christmas wrapping out of a box which contained food treats, during a Christmas-themed feeding session at Sydney's Taronga Park Zoo, December 9, 2014. (Photo by Jason Reed/Reuters)

A 13-month-old chimp named Fumo leaps onto a “Christmas present” box, which contained food treats, during a Christmas-themed feeding session at Sydney's Taronga Park Zoo, December 9, 2014. (Photo by Jason Reed/Reuters)

A family of giraffes look out from their enclosure before taking part in a Christmas-themed feeding session at Sydney's Taronga Park Zoo, December 9, 2014. (Photo by Jason Reed/Reuters)

Giraffes in front of Sydney's Opera House during a Christmas-themed feeding session of treats at Sydney's Taronga Park Zoo, December 9, 2014. (Photo by Jason Reed/Reuters)

A cotton-top tamarin reaches into a traditional Christmas bon bon to retrieve food treats, during a Christmas-themed feeding session at Sydney's Taronga Park Zoo, December 9, 2014. The Tamarin is one of the smallest of the primates, weighing in at only around 500 grams (1.1lbs) and is native to Colombia. (Photo by Jason Reed/Reuters)

A tree kangaroo reaches out to eat some flowers that are part of a Christmas-themed wreath, during feeding time at Sydney's Taronga Park Zoo, December 9, 2014. The tree kangaroos are native to the rainforests of New Guinea and far northern Queensland in Australia. (Photo by Jason Reed/Reuters)

A baby chimpanzee named Liwali hangs onto his mother Lisa as they arrive in their enclosure for a Christmas-themed feeding time at Sydney's Taronga Park Zoo, December 9, 2014. Liwali is one of the latest additions to the zoo's successful primate breeding program. (Photo by Jason Reed/Reuters)