The zombie one is exactly why I'm getting toasted when I die, I've suffered through one life I sure as hell don't want to come back even if I could munch on morons!
If horses were carnivorous, then we probably would have killed as many as we could. This begs the question of what we would use instead for the start of farming and travel. I reckon cows. I mean imagine how cool it would be to have cows everywhere we currently use horses. Funerals, weddings, discount burgers ect. It'd be great
...and so it begins.