Lev18:23 And you may not have sex relations with a beast, making yourself unclean with it; and a woman may not give herself to a beast: it is an unnatural act.
Lev19:19 Keep my laws. Do not let your cattle have offspring by those of a different sort; do not put mixed seed into your field; do not put on a robe made of two sorts of cloth.
Lev20:16 And if a woman goes near a beast and has sex relations with it, you will put an end to the woman and the beast: their blood will be on them.