Kazoo Let's Chew! Rawhide Chews are ideal to satisfy your dog's chewing passion. Dogs have a natural instict to chew, as regular chewing relieves boredom and helps to break down calcus and tartar deposits on their teeth. All Let's Chew! Rawhide Chews are made from 100% natural rawhide and are avaiable in a variety of both and fun shapes to entice and attract maximum chewing interest.