Like other herbivores, a chinchilla requires daily fiber to maintain a healthy digestive system. When served with Oxbow loose grass hays, the farm-fresh alfalfa in Essentials - Chinchilla Food provides the necessary fiber,balanced with a specially formulated blend of stabilized nutrients to meet the distinctive needs of this small animal species. Feed Oxbow Essentials - Chinchilla Food to chinchillas of all ages to maintain intestinal health and prevent digestive upset. Sizes: 5 lb, 10 lb, 25 lb, 50 lb.