Chinchilla Care: What Every Owner Should Know
Chinchillas (Chinchilla lanigera) come from the barren, arid mountains of South America at elevations of 3,000–5,000 m. They are built for cool, dry air: head and body length 225–380 mm with a tail of 75–150 mm, females the larger sex at up to 800 g (males about 500 g). With good care they live roughly ten years, and some have passed twenty. They are social, primarily nocturnal animals with crepuscular activity peaks, and they breed seasonally — typically two litters a year of two to three young after a 111-day gestation, and they will opportunistically take insects and bird eggs.
Temperature and Environment
Heat is the great enemy. Ambient temperatures above roughly 18.3–26.7°C (65–80°F) can tip a chinchilla into heatstroke, so cool, dry housing is non-negotiable. Their dense fur also drives a famous defensive reflex: fur slip, in which a grabbed or stressed chinchilla releases a large patch of fur to escape, revealing clean skin underneath. Handling must always be gentle and low-stress to avoid triggering it.
Diet
Chinchillas have a high requirement for dietary fiber and should eat mainly high-quality grass hay, with commercial pelleted chinchilla diets used to supplement rather than replace the hay.
Health
Dental disease is common: crown and root abnormalities of the cheek teeth turn up in about one-third of apparently healthy chinchillas examined routinely, and a less-abrasive captive diet plus genetics are the suspected drivers.
Respiratory and systemic infection can begin localized — often with conjunctivitis, enteritis, pneumonia, or middle/inner-ear infection — and in the case of yersiniosis can spread through the body, producing granulomatous lesions in the lungs, spleen, and liver and leading to death. Ironically, dust bathing too often irritates the eyes and causes conjunctivitis without true respiratory infection, so dust baths should be offered in moderation.
Two other conditions are worth knowing: giardiasis produces a cyclical pattern of appetite loss and diarrhea with declining body and coat condition, and listeriosis is a cecal, blood-disseminating disease whose main target is the liver. Listeriosis is common in fur-ranched chinchillas but has not been reported in pet chinchillas — a useful reassurance for owners.