Hippopotamuses require substantial water access and complex social environments in zoos, presenting management challenges that directly determine whether individual animals experience good welfare outcomes.
Hippopotamus welfare in captivity depends fundamentally on water access of sufficient depth, temperature, and cleanliness to allow the thermoregulation and skin hydration that are biologically essential for this species. Exhibits that provide only shallow water pools force hippos to spend excessive time on land under conditions that cause physiological stress. Social management requires sufficient space for animals to avoid each other when required, as forced proximity between incompatible individuals results in serious injury. Modern zoo standards have improved hippo welfare substantially, but older facilities may still fail to meet evidence-based requirements.