Mating occurs about 10 to 20 days after chipmunks become active each spring, sometimes sooner or later depending on seasonal weather patterns and conditions. Length: 8.0 - 12.0 inches Rodents For Sale by Katie white, Happy and healthy chinchilla, shes so lovely but unfortunately have to sell her due to my boy chinchilla not getting along with her as he prefers being alone which weve now found out. Copyright Pet Ponder & Buzzle.com, Inc. Instinctively, these rodents regularly store food within their burrows, which helps sustain this species at all times.