The Nibble N Gnaw Stacker is a tasty treat to hang in your pet's cage to present a fun and stimulating challenge. It is made up of two hard baked treats, a parsley treat, willow ball, wood gnaw and herb ring. Ideal for Rabbits, Guinea Pigs, Hamsters, Rats, Mice and Gerbils. Made only from 100% natural ingredients. Can be given to Chinchillas but sparingly. Hang in your pet's cage to present a fun and stimulating challenge. Made up of two hard baked treats, a parsley treat, willow ball, wood gnaw and herb ring. Ideal for rabbits, guinea pigs, hamsters, rats, mice and gerbils. Made only from 100% natural ingredients