Chinchilla Cage Basics - A good cage should be tall with lots of room to jump. Plastic should be kept to a minimum or none at all, as chinchillas will chew it (glass drinking bottles, plastic trays and shelves removed and replaced with wood), a variety of ledges, a cooling space (marble slap - put in the freezer in warm weather for extra cool), nooks or tubes to hide. They need fresh hay as their primary source of food and pellets to supplement their diet. Goji berry = good treat.