The pygmy hippopotamus is one of the rarest large mammals, with an important captive population. Their secretive nature makes welfare assessment particularly challenging.
Pygmy hippopotamus welfare in captivity benefits from their smaller size and less intense social requirements compared to common hippos, but their secretive nocturnal nature creates exhibit design challenges. Like common hippos, they require adequate water access and appropriate temperatures, but their tendency to be primarily active at night means daytime exhibits poorly capture their natural behavior. The small global captive population places genuine conservation importance on breeding success, but this should not be used to justify inadequate welfare standards for individual animals in the program.