The Avery EZ bird Retriever training dummies are 2/3 the size and weight of a full-sized adult bird for each species, allowing younger or smaller dogs to gain confidence in retrieving the bird to hand consistently. The body is coated in PVC that prevents hard-mouthing and is filled with a dense foam for buoyancy and Real bird feel. Raised v-grip tooth locks allow your dog to firmly grip the bird and the floating hard plastic head will discourage your dog from thrashing.