Zoo Animals

Zoo Hippopotamus Aquatic Welfare

Hippopotamus welfare in captivity is strongly linked to access to deep water for thermoregulation, calving and social behaviour, with wide variation across facilities.

Key Facts

Wild hippos spend up to 16 hours daily submerged to regulate temperature and protect skin
Hippo skin lacks sweat glands and must be kept moist to prevent cracking
Calving occurs in water, making deep pool access essential for breeding females
Pool depth of at least 1.5 metres is considered minimum for hippo welfare
Social housing of at least two compatible individuals is recommended

Welfare Considerations

Hippopotamus welfare is fundamentally linked to aquatic habitat quality. Shallow pools and social isolation cause preventable suffering that does not meet modern welfare standards.

What You Can Do

Support accredited zoos with deep-water hippo exhibits and social housing
Advocate for minimum water depth and pool size standards in zoo licensing
Ask zoos about their hippo social group composition and breeding history