The Douglas squirrels are also known as pine squirrels and chickarees. They are one of the smallest squirrels in their range. They are a reddish or a
brownish-grey and chestnut brown on their backs. They have a white or very light orange belly and a black lateral line that runs down their sides.
Their bodies measure 12 inches length and about 6 inches in tail length. Their hind feet are 45-60 mm and they weight about a half of a pound. The Douglas
squirrels have a summer and winter coat that molt twice each year. In the spring the molt begins in September, but the tail only molts once a year in the summer.