Patti — a river hippopotamus and a favorite animal at the Milwaukee County Zoo since she arrived in 1972 — has died. Patti ...

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

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

Patti the river hippopotamus from the Milwaukee County Zoo has died. Zoo animal care specialists say she was humanely ...

The Milwaukee County Zoo announced today that 55-year-old Patti the Hippo, who had been living at the zoo for more than a ...

The baby hippo skyrocketed to fame in September after adorable photos and videos of her at the Khao Kheow Open Zoo in ...

In case you can’t get enough of pygmy hippo Moo Deng, there’s now an official song featuring the internet’s favorite baby ...

Edinburgh Zoo playfully started (and then quickly ended) a rivalry with Moo Deng, Thailand’s viral sensation. Haggis is a ...

Edinburgh Zoo welcomes Haggis, an adorable pygmy hippo calf, joining the ranks of online stars like Thailand's Moo Deng.