Brachygnathism or colloquially Parrot Mouth, is the uneven alignment of the upper and lower teeth in horses. In serious cases, the upper teeth protrude beyond the lower teeth. Problem with parrot mouth occur if the molars at the back of the mouth are also uneven, resulting in large hooks forming on the upper molars and the rear of the lower back m
Found on http://en.wikipedia.org/wiki/Brachygnathism
Condition wherein the lower jaw is shorter than the upper jaw, placing the lower incisor teeth farther behind the upper incisor teeth.
Found on http://www.thehorse.com/Glossary.xhtml?L=B
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