Raccoons if they get in your coop will kill everyone but just eat the heads.Coyotes are opportunistic hunters. They see a weakness and exploit it. Once their stomachs are filled they run away. Dogs and weasels can switch into a »kill'em all« frenzy, wiping out whole flocks without even eating a single bite. And dogs are persistent, trying to dig under a fence, coming back the next day and dig some more, coming back… until they're through.