MSD Manual

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Brachygnathism (parrot mouth), stallion
brachygnathism-parrot-mouth-stallion-roberts-sized
Brachygnathism (parrot mouth), stallion

    Brachygnathism (parrot mouth) is evident in this photograph of a stallion. The marked overbite is the result of the mandible and maxilla being unequal lengths.

Courtesy of Dr. Lisa Pearson.