There is no way for us to mimic a chinchilla's diet that they would have in their natural habitat. We try to give them the nutrients and roughage we believe they require. We do know that they have a sensitive digestive tract, and feeding a simple basic diet seems to work best for them. They need high fiber to keep their intestinal tract moving and help keep their teeth worn down to a healthy length. If you switch your chin's diet often or give them too many treats, it can cause intestinal upset. The basic diet you will feed is chinchilla pellets, hay, limited healthy treats and fresh water.