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Hippopotamidae is a family of stout, naked-skinned, and semiaquatic artiodactyl mammals, possessing three-chambered stomachs and walking on four toes on each foot. While they resemble pigs physiologically, their closest living relatives are the cetaceans.
The hippopotamus (Hippopotamus amphibius) (/ ˌ h ɪ p ə ˈ p ɒ t ə m ə s /; pl.: hippopotamuses; often shortened to hippo (pl.: hippos), further qualified as the common hippopotamus, Nile hippopotamus and river hippopotamus, is a large semiaquatic mammal native to sub-Saharan Africa.
If the file has been modified from its original state, some details may not fully reflect the modified file. Short title The code of nomenclature and check-list of North American birds adopted by the American Ornithologists' Union; being the report of the Committee of the Union on Classification and Nomenclature
Birds' hearts and brains, which are very sensitive to arterial hypoxia, are more vascularized compared to those of mammals. [72] The bar-headed goose ( Anser indicus ) is an iconic high-flyer that surmounts the Himalayas during migration, [ 73 ] and serves as a model system for derived physiological adaptations for high-altitude flight.
Hippos are characterized by large, barrel-shaped torsos, stocky legs, and large mouths containing equally large canine tusks. They are huge and stocky, but despite this frame, can run upwards of
The pygmy hippopotamus or lala pygmy hippo (Choeropsis liberiensis) is a small hippopotamid which is native to the forests and swamps of West Africa, primarily in Liberia, with small populations in Sierra Leone, Guinea, and Ivory Coast. It has been extirpated from Nigeria. [1] The pygmy hippo is reclusive and nocturnal.
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Animals described as pachyderms, clockwise from top left: a hippopotamus, a rhinoceros, a tapir, and an elephant Pachydermata (meaning 'thick skin', from the Greek παχύς , pachys , 'thick', and δέρμα , derma , 'skin') is an obsolete order of mammals described by Gottlieb Storr , Georges Cuvier , and others, at one time recognized by ...