Red-cheeked chinchillas are not docile in character. They have sensitive hearing, sight, and smell, and a high degree of vigilance. After understanding the character of the red-cheeked chinchilla, let's introduce its appearance characteristics.

The red-cheeked squirrel is medium in size, with a very short tail and narrow orbital skulls , the snout is short and narrow. Most of the upper molars are longer than the tooth space, and a few are shorter than the tooth space. The pair of hard palatal fossa behind the upper incisors are very shallow and do not extend posteriorly into shallow grooves. Its auditory bulb is shorter, and its length is less than its width. The two ridges on the parietal bone are bell-shaped or bell-shaped.