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

The Milwaukee County Zoo has announced that longtime resident Patti, a river hippopotamus, was humanely euthanized on Sunday, ...

In case you can't get enough of the little pygmy hippo Moo Deng from Thailand, there's now an official song featuring the ...

Patti was humanely euthanized on Sunday, Nov. 10. According to a statement from the zoo, 55-year-old Patti — who was ...

Moo Deng fans have something to sing... er, I mean cheer... about. That's because the Khao Kheow Open Zoo in Thailand where ...

The Milwaukee County Zoo has announced that longtime resident Patti, a river hippopotamus, was humanely euthanized on Sunday, ...