Stimulate your dog with interactive Busy Buddy Funny Bone dog toy. The durable nylon bone and rubber ball provide dogs with an extended chewing experience. Just unscrew the toy to load the included Gnawhide strips. The Gnawhide dog treats last longer than giving treats alone and dogs are stimulated to chew the toy well after the irresistible gnawhide treats are gone. Additional Gnawhide treat strips sold separately.