fur with yellow eyes and sharp fangs and claws. The real monsters are the ones who hide in human flesh and bone. The real monsters are the evil scum who think that they're even worthy to be called human.
If it's any indication by my username, I LOVE monsters of all kinds and yes I DO believe in them.
I even believe in my own monster creations like the werejohncandy, sure I've been made fun of for it especially by trolls and like but they can go suck it for all I care.