Of course, we all know what my favorite Dostoevskiesque metaphor for human beings is *ahem, cough cough.*
Just wanted to point out that Nietzsche, similarly awesome, refers to humans in Beyond Good and Evil as The Conceited Ape. (paragraph 222)
Of course, he also says, in all seriousness, that if women were indeed intelligent creatures, they would have learned to be better cooks by now. (paragraph 234)
That darn Nietzsche.