Watch your dog chew, bite and twist the PetSafe Busy Buddy Jack toy to try to get the treat out of the middle. The Jack is a challenging, durable, refillable treat-holding toy that dogs love at playtime. It holds Busy Buddy natural rawhide treat rings (four included) in multiple locations to increase the challenge of the toy over time. Durable nylon and rubber construction holds up to the toughest chewers. Additional rawhide or dental treat rings sold separately. Dishwater safe for easy cleanup. Sizes: Small For dogs 8-20 lbs. Medium For dogs 20-50 lbs. Large For dogs more than 50 lbs. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Toys.