hippo wiki:
[ened form of hippopotamus.See also:Augustine of HippoHippo Regius, an ancient name for the modern city of Annaba, Algeria.
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mouth wiki:
>For the mouth of a river, see delta and estuary. The mouth, also known as the buccal cavity or the oral cavity, is the opening through which an animal or human takes in food. It is usually located in the head, but not always; the mouth of a planarium is in the middle of its belly.Most animals have a complete digestive system, with a mouth at one end and an anus at the other. Which end forms first in ontogeny is a criterion used to classify animals into protostome and deuterostome.Some animals, such as the cnidarians and the planaria, have no anus. They expel waste through the mouth, or as do brachiopods, which have very efficient digestive systems, roll it around in the stomach until it is finished.
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