Goat's muzzle, showing teeth.
At the front, there are incisor teeth only on the bottom jaw. On the upper jaw a bony pad (under the front lip pictured) is instead used when biting. Smaller chewing teeth can be seen at the back of the jaw.
Photograph: cropped from original by Tim Strater from Rotterdam, Nederland (Geit) [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons.