Funny Music of Indian giant Tree Squirrel facts-Squirrels are members of the family br Sciuridae, a family that includes small or medium-size rodents. br br The squirrel family includes tree squirrels, ground squirrels, chipmunks, marmots (including groundhogs), flying squirrels, and prairie dogs among other rodents. Squirrels are indigenous br to the Americas, Eurasia, and Africa, and were introduced by humans to Australia.br br The earliest known fossilized squirrels date from the Eocene epoch, and among other br living rodent families, the squirrels are most closely related to the mountain beaver br and to the dormice.br br Since there are so many types of squirrels, they range greatly in size. br The smallest squirrel is the African pygmy squirrel. It grows to 2.8 to br 5 inches (7 to 13 centimetres) in length and weighs just 0.35 ounces br (10 grams). The Indian giant squirrel is the world's largest known squirrel. br It grows to 36 inches (1 meter) long and weighs up to 4 pounds (1.8 kilograms).br br Grey squirrels, commonly found in North America, are medium-size squirrels.br They grow to 15 to 20 inches (38.1 to 50.8 cm) in length, with their tailsbr adding an extra 6 to 9.5 inches (15.24 to 24.13 cm) to their length. They br typically weigh about 1 to 1.5 pounds (0.45 to 0.68 kg).