PetSafe Busy Buddy Joint Support Treat Ring Refills - Size C (3 Pack) Pack of 3 Pet Safe Busy Buddy Size C Refills Dental Rings Dog Treat 5.9 oz Each 16 per pack Designed for use with select Busy Buddy toys, including the Bouncy Bone, Bristle Bone, Nobbly Nubbly, and Jack Extends playtime and helps alleviate bordem and destructive behaviors