Daddy's a what?

Yesterday morning Tyler was talking to himself in his crib when I walked in the door. I heard him say something about an angel, so I asked him what he was talking about. He pointed at me and said "Mommy's an angel." (Awww....) Then he pointed at himself and said "Tyler's a butterfly." I replied, "Oh, mommy's an angel and Tyler's a butterfly...so what does that make daddy?" After thinking for a bit, he replied, "Daddy's a cow."