What are you dogs afraid of?

One of my dogs is afraid of baths. If you even say the word bath, he runs away as fast as he can. He won't go anywhere near any bathtubs, and if you try to make him, he'll just roll over belly up so you can't drag him to it.
Ironically, he loves to play in the sprinklers and with the hose. He just hates having a bath. He also runs away when you get the dog shampoo out because he knows that means it's going to be bath time, it's amazing how smart he is to have figured that one out.