Is There a Reason Why We Hate Cows or Chickens?

People who eat cows, it's not just because the cow doesn't look like them. It's a whole different category of being to them, right? They have completely different cognitive abilities and self-awareness or all of this kind of stuff. We're human beings, we philosophize, we have our own kind of structures of law and morality that is in no way affected by the well-being of a cow or chicken.