For ours, we use one of those suspension harness things that hang from a door jam, and some narcotic sedatives from the vet. He's the sweetest thing in the entire world, and he'll let a chihuahua bark him into a corner, and then be sad about it for the rest of the day because he couldn't make a new friend, but when nail clippers are involved, he just loses his entire mind. It really is like a phobia in the true DSM sense of the word.