The nibbling toys for rodents of the GoodBite Tiny & Natural line are useful to keep the teeth of rabbits, hamsters and mice from growing too much. All products of the line are non-toxic, environmentally friendly and biodegradable and made with natural components. They come in fun shapes designed to tickle your pet's curiosity- GoodBite Tiny & Natural Apple, for instance, helps strengthen the teeth of rodents and to keep them from growing too much, all the while working as a fun, anti-stress toy. The product doesn't alter your pet's diet: it's treated in such a manner as not to be metabolised by the body in case of ingestion. Even if accidentally swallowed, nibbling toys for rodents are perfectly safe, as they causes no intestinal obstruction. These toys do not expire.