The pygmy hippopotamus has several special adaptations for living in its environment, including major sensory organs on top of its head, strong muscles to keep ears and nostrils shut underwater and secretions of a red li... More » Pets & Animals Mammals Marine Mammals

Hippos eat plant foods, particularly grasses, shoots, leaves, reeds, flowers, stems and bark. They've been known to scavenge, though they are herbivores, and their digestive systems haven't evolved to eat meat. Biologist... More » Pets & Animals Mammals

Calvin Coolidge had a 'pet' pygmy hippopotamus named Billy, which was short for William Johnson Hippopotamus. However, this pet didn't live in the White House with Coolidge in his family, but rather resided at the Nation... More » History Modern History US History
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