Zoo Animals

Zoo Hippopotamus Welfare and Aquatic Needs

Hippopotami are semi-aquatic animals with strong aquatic behavioural needs that must be met for basic welfare in captivity.

Key Facts

Hippos spend up to 16 hours daily in water in the wild
Skin desiccation occurs within hours without aquatic or muddy environments
Social groups in the wild are dominated by large males
Captive hippos commonly show aggression in socially inappropriate groups
Reproductive suppression in captive females is associated with social stress

Welfare Considerations

Hippopotami without access to deep water for submersion suffer skin damage and thermal stress. Social group composition that allows females to move away from dominant males is essential for welfare. Pool depth, quality, and temperature must be managed to meet hippo thermoregulatory and social needs.

What You Can Do

Support zoos maintaining large, deep hippo pools and appropriate social groups
Advocate for zoo standards specifying minimum aquatic provision for hippos
Donate to wild hippo conservation as populations face multiple pressures