Basic Facts and Care Adult chins weigh 400-800 grams (the female is larger than the male. Rectal temperature of 102-103° F. Heart rate of 200-350 beats per minute. Average respiratory rate is 45-80 breaths per minute. Chinchillas reach sexual maturity at 7-9 months. Gestation usually lasts 105-115 days. Average litter size is 2. Babies weigh 30-60 grams. Babies are usually weaned at around 6 weeks. Their diet consists of all they can eat timothy hay and/or alfalfa, with their basic diet being pellets. Treats should be given sparingly, not to exceed 1 teaspoon per adult. Suitable treats include dried fruits, nuts, sunflower seeds, and fresh carrot. Average daily diet consumption per adult chin consists of ¹/² to 1 cup hay, 1oz. pellets and 1tsp. veggie treat. Housing- a standard rabbit style cage 2'x3'x2' is ideal. Ideal room temperature is 50-60°F, temperatures higher than 80°F can be fatal. A dust bath should be given 2-5 times a week.