Premium Nutri Chomps 4" Assorted Chicken, Peanut Butter, Milk, and Pork Skin Small Knots are rawhide-free dog chews. Veterinary Recommended Premium Nutri Chomps are safe & healthy dog bones. In 2012, The University of Illinois College of Veterinary Science conducted a study which proved pork skin to be fully digestible and significantly more digestible than beef rawhide. Jungle Jack Hanna has endorsed the Premium Nutri Chomps brand as a safe and healthy rawhide alternative. Assorted Chicken, Peanut Butter, and Chicken Small Knots are perfect for some Small and Medium Dogs.