A pair of critically endangered, nearly 100-year-old Galapagos tortoises at the Philadelphia Zoo have become first-time ...

The tiny joey, born the size of a jellybean, has spent the past few months growing and developing inside the mother's pouch.

Riverbanks Zoo and Garden announced the death of its beloved Amur tiger, Koshka, who they said lived an extraordinary life ...

An Amur tiger that entertained guests at the Riverbanks Zoo and Garden for nearly two decades has died, zookeepers announced.

Yesterday was a sad day for fans of the Riverbanks Zoo and Garden as they said goodbye to one of their Amur Tigers who lived ...

Riverbanks Zoo and Garden is remembering the life of Koshka, one of their Amur tigers who recently passed away.

The births were a "first" in the zoo's 150-year history, and Mommy, who arrived in 1932, was the oldest known first-time ...

The two oldest residents of the Philadelphia Zoo are brand new parents to four hatchlings — a major milestone for this ...

Mommy has been living at the Philadelphia Zoo for 90 years, and waited until old age to experience motherhood.

Visitors often had the pleasure of watching Koshka patrol her yard or hearing her evening calls as she announced her territory or answered the lions next door.