 There have been known instances of a raven or a crow swooping down on the head of a sheep and plucking out its eyeballs. And that's a horrible thing. But let me ask you something. What's the sheep going to do? Bark? What's he going to do? Emit a noxious odor? What's he going to do? Claw the bird to death? He's not going to do anything because he's a sheep. And sheep are defenseless. Third thing about sheep that I found out. Sheep are dirty. They're very dirty creatures. I grew up in the city. I figured pigs were dirty.