The Milwaukee Zoo mourns the loss of Patti, the oldest hippo in U.S. zoos, who was known for her spirited personality.

Officials at the Gulf Breeze Zoo are inviting visitors to see its newest resident: Chibuzo, a baby Nile hippopotamus.

The Houston Zoo got a four year old pygmy hippo named Akobi. He is from the San Francisco Zoo. Here's where you can find him at the Zoo.

Her image has been used by sports teams and businesses. The hippo, now 4 months old, has drawn a huge amount of visitors to ...