There's a lizard that lives behind one of the wallhangings in my room. He often hangs out behind the frame, doing a whole lot of nothing. I'm not sure what he eats - I imagine that he finds his share of spiders & crickets to eat. & I have no idea where his water source is.
I think I heard somewhere that in Asian cultures, lizards are good luck. Anyway, I like him, & he doesn't seem to mind me, so he can stay.