Around 3500 B.C., hippos were apparently maintained in a private zoo along with elephants and baboons in the ancient Egyptian city of Hierakonpolis (Rose 2010).
First exhibited in the London Zoo in 1850
Paris zoo first exhibited in 1853
Husbandry
Common in many large zoos
Easy to keep and breed
Resistant to disease
Hippos at the San Diego Zoo
In the 40 years they lived at the San Diego Zoo, Rube and Rubie had 10 calves together.