When I was in 4th grade, I was at the neighbor's house, where they had a cat and a great dane. As I was waiting for my friend to come out, the door opened and the cat rushed out, stood still for a microsecond, and took the fastest poop I've ever seen. The cat took back off running as the great dane came running out the door after it. The dog saw the poop, sniffed it, and wolfed it down in one swallow and then took off again after the cat. That was the first time I realized why I don't want dogs to lick me.