There is a strange but telling line, repeated, in the Noah story, that god makes a promise to Noah and his family and all living creatures. It is pretty obvious from a critical viewpoint that animals had nothing to do with the iniquities of human beings, but that they suffered hugs losses because of those iniquities. So the myth makers had god promise the animals the same thing, and at the same time, god promised human beings.
Which means god talks to animals, they understand god and they understand what a promise is. Which makes me think that when they are being herded into abattoirs mooing, squealing, bleating and screaming god does know what they are saying.
If they are screaming not be killed I would posit a wholly ethical god could not allow meat eaters into heaven. For, after all, who slaughters the weak begging to be spared?