Our Big Bark Bites are all-natural wood chews with a crunchy bark crust that prevent boredom and help maintain healthy teeth for your pet. No artificial colors or flavors. Completely safe to chew. Includes a small hole in the chew so you can slide them on any Super Pet(R) Ka-Bob dispenser, sold separately. Ideal for rabbits, guinea pigs, chinchillas, hamsters, gerbils and other small furry critters.