Chinchillas eat and digest desert grasses and cannot efficiently process fatty foods, high protein foods, or too many green plants. A high quality, hay-based pellet and a constant supply of loose timothy hay will sufficiently meet all of their dietary needs. Chinchillas have very sensitive GI tracts that can be easily disrupted so it is important to maintain them on a healthy diet. Avoid chinchilla feed that includes a mixture; chinchillas may avoid the healthy high fiber pellets in favor of items like raisins and seeds. Fresh vegetables and fruit (with high moisture content) should be avoided as these can cause bloat in a chinchilla, which can be fatal. Sweets and dried fruit treats should be limited to one per day, at the very most. Chinchillas also eat and drink in very small amounts. This can lead to diarrhea, or in the long term, diabetes. Nuts should be avoided due to their high fat content. High protein foods and alfalfa hay can cause liver problems and should be limited.