Onassis, a giant Amazon River turtle, has lived at the zoo since 1969. No one knows exactly how old she is, but she's still ...

Four adorable western Santa Cruz Galápagos tortoise babies are now on display at Philadelphia Zoo after their 100-year-old ...

For the first time in over 150 years, the Philadelphia Zoo has new additions to the Western Santa Cruz Galapagos tortoise ...

The Columbus Zoo’s trailblazing gorilla, the first in the world to be born in captivity, became a matriarch and presided over ...

Colo, the first gorilla born in captivity, died at the Columbus Zoo in 2017 at age 61. At the time of her death, she was the oldest-known gorilla in the world. In the early hours of Jan. 17 ...