Sciuridae is the biological family of mammals that includes squirrels, chipmunks, spermophiles, marmots (including woodchucks), and prairie dogs. Sciurids range in body size from mouse-sized African pygmy squirrels at 7–10 cm (2.8–3.9 in) in length and just 10 g (0.35 oz) in weight to robust red giant flying squirrels of Asia, weighing up to 3 kilograms. Their tail has long hair, limbs with sharp claws, posterior slightly longer than the front. Sciurids have 22 teeth. They are indigenous to the Americas, Eurasia, and Africa, and have been introduced to Australia, and have been found to live a maximum of 14 years in the wild.
Eastern Gray Squirrel Sciurus carolinensis