In dairy, cattle are sexually exploited. Cows must be preggers to give milk, so they wank a bull to get his semen, then a farmer will inject that semen into a cow while holding her cervix with his hand up her arse. Then when she gives birth, the calf will either become a milker like her mum, or become veal if he's a boy.

But we don't talk about that. It's only wrong if you stick your peepee into a cow.