Maple, T. L., Erwin, J., Mitchell, G. 1974 . Sexually aroused self-aggression in a socialized, adult male monkey. Archives of Sexual Behavior 3, 471-475.

An abnormal but apparently successful sexual posture was observed in an adult male rhesus monkey in which the subject bit its hands and leg in the process of dismounting. This behavior followed each of several mounts but ceased toward the end of the series, culminating in ejaculation. The animal's rearing history is included, suggesting that early partial isolation may produce long-lasting abnormalities which, while unusual, need not seriously affect successful copulation.