Fyodor Dostoyevsky said this quote

Have you noticed how dogs sniff at one another when they meet? It seems to be their nature.- Yes; it's a funny habit.- No, it's not funny; you are wrong there. There's nothing funny in nature, however funny it may seem to man. If dogs could reason and criticize us they'd be sure to find just as much that would be funny to them, if not far more, in the social relations of men, their masters -far more, I think. I am more convinced that there is far more foolishness among us.