Sully the baby gorilla, one of the zoo’s newest and cutest residents, celebrated his first birthday Tuesday -- with a big ...

A baby gorilla at the Cheyenne Mountain Zoo has officially turned one after the zoo celebrated his birthday with guests ...

The Detroit Zoo just welcomed a baby western lowland gorilla. The newborn is only the second gorilla born in the zoo's ...

The Cheyenne Mountain Zoo is throwing a birthday party for one of its newest members. Sully, a western lowland gorilla, ...