Photograph by Mehgan Murphy/National Zoo

Happy the hippo was born at the Smithsonian’s National Zoo and lived there for 28 years. In recent years, he has been the zoo’s only hippo and shared a habitat with the elephants. On Monday, September 28, Happy moved out in preparation for the Asian elephant exhibit expansion. His new home is at the Milwaukee County Zoo in Wisconsin. Zoo visitors in Washington, D.C. will miss him, but at least Happy will finally have some company–two female hippos named Puddles and Patti.

Learn more about Happy’s big move on the National Zoo’s website.

Get the facts on hippos on National Geographic Kids.