The crime against nature or unnatural act has historically been a legal term in English-speaking states identifying forms of sexual behavior not considered natural or decent and are legally punishable offenses.[1] Sexual practices that have historically been considered to be "crimes against nature" include masturbation, sodomy[2] and bestiality.[3]
^See Rose v. Locke, 1975, 96 S.Ct. 243, 423 U.S. 48, 46 L.Ed.2d 185.
^Andrews v. Vanduzer, N.Y.Sup. 1814 (January Term, 1814) (Vanduzer accused Andrews of having had connection with a cow and then a mare and the court understood this to mean that Vanduzer was going around telling others that Andrews had been guilty of the crime against nature with a beast.