Chester Zoo

Conservationists at a U.K. zoo have captured the moment a rare tree kangaroo popped out of its mother's pouch for the first time, part of research aimed at helping the endangered species survive in the wild.

Toucan, meerkat and Lemur are the new inhabitants of the Sofia Zoo.

The exotic animals are born in the year when the oldest zoo on the Balkan Peninsula celebrates its 130th birthday.

A male and a female lion that have been kept apart in different fields in Istanbul's Darıca Faruk Yalçın Zoo for over two years were brought together for Valentine's Day on Feb. 14. 

A British zoo was celebrating after the birth of a rare Rothschild's giraffe calf, whose number has dwindled to fewer than 1,600 in its native Kenya and Uganda.