Do toads have any enemies

Yes. Snakes for one, certain birds, especially owls and other raptors, and other reptiles such as snapping turtles and then there are fish, i.e. large mouth bass will eat a toad in a minute if given a chance. Toads are not typically found in water but are not opposed to getting their tiny little webs wet. As to the reptile predators, seems intra- genus cannibalism is "o k" in the reptilian world.