Leviticus 20:15-16

20:15 If a man has sexual intercourse with any animal, he must be put to death, and you must kill the animal. 20:16 If a woman approaches any animal to have sexual intercourse with it, you must kill the woman, and the animal must be put to death; their blood guilt is on themselves.

Exodus 22:19

22:19 “Whoever has sexual relations with a beast must surely be put to death.