Hippopotamus diet management in zoo settings is critical for digestive health, with inappropriate diets causing metabolic and gastrointestinal problems that compromise welfare.
Hippo diet welfare demonstrates that the natural diet of an animal must be understood and approximated in captivity to prevent iatrogenic digestive disease. Hippos that evolved as grass grazers have digestive physiology tuned to high-fiber, low-sugar forage. Providing fruits, sweetened commercial feeds, and other high-palatability foods that hippos eagerly accept causes digestive stress, dental problems, and metabolic issues. The appeal of watching hippos eat fruit - they appear to enjoy it - can mislead keepers away from the less dramatic but more welfare-appropriate grass and hay diet. Appropriate hippo diet management requires understanding and following natural dietary patterns rather than optimizing for keeper satisfaction or animal enthusiasm at feeding time.