Not all cages are supposed to household chinchillas whole-time. Some cages are only ok as short-term/quarantine cages for chinchillas, but could be too smaller for the chinchilla to actually be housed in for any length of time. Each cage lists what Animals the cage would work for. Stephanie Larson states: https://reidugsbm.uzblog.net/the-definitive-guide-to-cat-fountain-50386057