4"- 5" Rawhide Donuts is a natural product which is made of the inner layer of the hide of any cleft-hoofed bovine livestock.Rawhide comes in a variety of forms including rawhide bones, compressed rawhide, rawhide chews and more. Rawhide dog bones are good for his teeth and help to remove plaque and tartar. If your dog consistently swallows bones whole, it should probably not receive chews unattended.It is important that the chew be large enough and thick enough that your dog cannot easily chew off and swallow a large piece or swallow the whole chew.