Hey I've had lots of the little ankle biters. My mom used to breed them. Here is a toy they all love. Get a small fishing pole (about 2ft long) an ice fishing pole is ideal. Also get a fishing reel. Put about 8lb test line on and attach a medium sized(about 3 in long) toy mousie at the end of the line. Cast and reel it in. I had poodles and pomeranians and they would go crazy for this toy. I had to hide it in the pantry closet and the poodle would stand outside the closet and cry for the toy.