An average chinchilla's lifespan is between 8 and 10 years. Keeping them in captivity would increase their life up to 15 to 20 years. The lifespan also depends on the type and breed of a chinchilla. It is better to have knowledge about the lifespan of your chinchilla. It helps you to make important decisions including medical treatment, daily care, etc. If you want your chinchilla to live much longer, you need to know about some important strategies and regular health care. The longest a chinchilla survived was around 30 years.