Canine Tooth | Anatomy - Britannica

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External Websites

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canine tooth anatomy Ask Anything Homework Help Also known as: cuspid, eye tooth Written and fact-checked by Britannica Editors Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Britannica Editors History Britannica AI Ask Anything Table of Contents Table of Contents Ask Anything

canine tooth, in mammals, any of the single-cusped (pointed), usually single-rooted teeth adapted for tearing food, and occurring behind or beside the incisors (front teeth). Often the largest teeth in the mouth, the canines project beyond the level of the other teeth and may interlock when the mouth is closed, restricting the animal to an up-and-down chewing action. Among sheep, oxen, and deer, only the upper canines are large; the lower ones resemble incisors. Rodents lack canines. The tusks of wild boar, walrus, and the extinct sabre-toothed cat are enlarged canines. (The tusks of elephants are upper incisors, not canine teeth. Canine teeth are absent.) In some animals (e.g., pig, deer, baboon, gorilla), the male has much larger canines than does the female; these perform a threatening and protective function besides that of tearing.

Also called: cuspid or eye tooth (Show more) Related Topics: tooth (Show more) See all related content

Humans have small canines that project slightly beyond the level of the other teeth—thus, in humans alone among the primates, rotary chewing action is possible. In humans there are four canines, one in each half of each jaw. The human canine tooth has an oversized root, a remnant of the large canine of the nonhuman primates. This creates a bulge in the upper jaw that supports the corner of the lip.

This article was most recently revised and updated by Kara Rogers.