Rawhide
Rawhide chew toys are most often associated with puppies and dogs, though rawhide toys are plentiful in the bird toy section of most pet stores. Rawhide is suitable for all animals except herbivores, as it is made of animal skin. Rabbits, which only eat vegetation, cannot have rawhide toys because their digestive systems cannot process them. This is a rather sturdy kind of chew toy and it can take months for a small animal or bird to destroy. Examples of rawhide chew toys are twists and rawhide bones. Compressed rawhide can dangerously splinter when dry as well as break off in large pieces that may be ingested, and thus are generally not recommended for large breeds of dogs. Chew toys made of leather are not recommended for dogs as they cannot be properly digested in the stomach and may cause blockage in the intestines.
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