"You an alien? Anyway, I don't know. It's simple science, biology, you're supposed to be attracted to certain features, look for similarities, that kinda stuff." Leonard shrugs, not sure how much he can get in on the speciesism. He hasn't exactly met any aliens so far, just a couple vampires and an assortment of others. "Anyway, don't ask me. I find most people off-putting, alien or not."