hippopotamus Hippopotamus amphibius hippo plant-eating African mammal, Hippopotamidae semi-aquatic, river lake sub-Saharan Afric
Illustrated travels a record of discovery geography and adventure edited by h w bates assistant secretary of the royal geographical society with engravings from original drawings by celebrated artists cassell petter and & galpin London paris new york. Hippopotamuses plural hippopotami is also used hippos can be used as a short plural) are gregarious, living in groups of up to 40 animals; such a group is called a pod, herd, dale, or bloat. A male hippopotamus is known as a bull, a female as a cow, and a baby as a calf. They are also known as the Common Hippopotamus or the Nile Hippopotamus. The hippopotamus is the type genus of the family Hippopotamidae. The Pygmy Hippopotamus belongs to a different genus in Hippopotamidae, either Choeropsis or Hexaprotodon. Hippopotamidae are sometimes known as Hippopotamids. Sometimes the sub-family Hippopotaminae is used. Further, some taxonomists group hippopotamuses and anthracotheres in the super-family Anthracotheroidea or Hippopotamoidea. Five subspecies of hippos have been described based on morphological differences in their skulls and geographical differences H. a. amphibius – (the nominate subspecies) which stretched from Egypt, where they are now extinct down the Nile River to Tanzania and Mozambique. H. a. kiboko – in the Horn of Africa, in Kenya and Somalia. Kiboko is the Swahili word for hippo. Broader nasals and more hollowed interorbital region. H. a. capensis – from Zambia to South Africa. Most flattened skull of the subspecies. H. a. tschadensis – throughout Western Africa to, as the name suggests, Chad. Slightly shorter and wider face, with prominent orbits. H. a. constrictus – in Angola, the southern Democratic Republic of Congo and Namibia. Named for its deeper preorbital constriction. The suggested subspecies were never widely used or validated by field biologists; the described morphological differences were small enough that they could have resulted from simple variation
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Photo credit: © Alan King engraving / Alamy / Afripics
License: Royalty Free
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