Apologies @elbanditoroso. The laws were likely religious in origin. People of faith don’t seem to like coupling of anything other than a human man, and human woman. In fact, for whatever reason, it’s usually the first thing someone opposed to gay marriage brings up. They say ‘a man and man, what’s next a man and a horse?’
I would like to think that the people who drafted these laws were thinking about the animal and the cruelty of such acts. But I wager it was based on how a person who has sex with animals is/was viewed. They didn’t want the ‘town animal fucker ’ sitting next to them at a gathering. The conversation would be very awkward.
I suppose there was a guy screwing everyone’s animals, so they all got together and made it illegal….
Not all laws are sensible to me, but I agree that nobody should have sex with animals.