What is Bestiality?

Legal Definition
Bestiality is the carnal knowledge and connection against the order of nature by man or woman in any manner with a beast. Code Ga. 1882, § 4354. We take it that there is a difference in signification between the terms "bestiality," and the "crime against nature." Bestiality is a connection between a human being and a brute of the opposite sex. Sodomy is a connection between two human beings of the same sex,—the male,— named from the prevalence of the sin in Sodom. Both may be embraced by the term "crime against nature," as felony embraces murder, larceny, etc., though we think that term is more generally used in reference to sodomy. Buggery seems to include both sodomy and bestiality. Ausman v. Veal, 10 Ind. 356, 71 Am. Dec. 331.
-- Black's Law Dictionary
Legal Definition
Sexual intercourse between a human being and a beast of opposite sex. See 71 Am. Dec. 331.
-- Ballentine's Law Dictionary