Merck Manual

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Atresia ani, alpaca cria
atresia-ani-alpaca-cria-roberts-sized
Atresia ani, alpaca cria

    This photograph shows atresia ani in an alpaca cria. The vaginal mucosa (dark pink tissue) is visible in the vulvar opening, but there is no rectal opening present dorsal to the vulva.

Courtesy of Dr. Lisa Pearson.