Bingo @bookish1! I’m glad you picked up on that!
Of course, logically, it doesn’t make sense that it’s ok to take an animals life, but not ok to do something to it that doesn’t even hurt it. We brand animals all the time. That hurts a lot more. Also animals don’t appear to have much of a sense of a larger self-interest. They can’t think in the long term. They can’t see the consequences of their actions other than direct, personal consequences, so they don’t have a sense of morality.
However, a prohibition against animal rape makes sense for emotional reasons. Humans tend to identify with other mammals. This is cultural, and not all cultures identify with animals as strongly as the wealthier European-derived cultures.
Still, when people emotionally identify with animals, they attribute human feelings to them. Obviously, rape is a an act of emotional violence even more than it is an act of physical violence, and humans think it is about as horrible thing as a person can do to another. It is taking their womb over and forcing that woman to bear a child she doesn’t want to.
With animals, of course, they probably don’t even associate sex with creating new life. They certainly wouldn’t know that sex with a human couldn’t get them pregnant. But that doesn’t matter. It is the human idea of rape of another human being placed on animals that makes people feel all wrong. It doesn’t matter that the animals probably don’t feel it is much of a problem. It doesn’t matter that the reason we own animals is to eat them. Rape is a purely symbolic act, and the symbolism is all wrong, and it makes humans feel emotionally violated in a way that killing the animal does not.
I’m not saying this is logical. I don’t think it is logical. But it makes emotional sense, and emotions probably motivate about 95% of human behavior. Logic and science might motivate 5%... if that.
My guess is that, given a choice, a hog would much rather be raped than turned into bacon. But I seriously doubt most humans would feel that way. They’re fine with bacon. The idea of hog sex makes them totally queasy. There are a few people who think both rape and killing is wrong. They’re vegetarians. In my opinion, for a human to be consistent, if they were against hog rape, they’d also be against hog killing. But I’m not sure there is a human alive who is consistent.