Types of Squirrels

Tree Squirrels

Ground Squirrels

Flying Squirrels

Sources

Tree Squirrels

Eastern Grey Squirrel hanging from a branch

Tree squirrels, most commonly the Red and the Grey squirrels, can reach lengths of eighteen inches (Red Squirrel) to two feel long (Grey Squirrel), and weigh as much as eighteen (Grey) to twenty-five (Red) ounces and live anywhere from five to ten years. However, studies in Belgium have suggested that the size and weight of the animals will vary depending on the sex and habitat they live in. Even though the two species are separated by color, there are many variations in the coats, from white (non-albino) to a dusty red, and the color of the coat changes with the season in a bi-annual molt. Both types of tree squirrels are active during the day.

Ground Squirrels

Standing Ground Squirrel

Ground Squirrels are easily identifiable by their ability to stand straight up on their hind legs for long periods of time and remain comfortable while they look for danger, as well as raising the alarm when they find some. They vary in size, from the small chipmunk which is around six inches in length to the Prairie Dog, which can grow to be sixteen inches long, and some types of Marmots which can grow to be about twenty-nine inches long. Also included in this group is the Marmot family, which includes the Groundhog. Ground Squirrels are mostly communal creatures, except for some Marmots who prefer to live in solitude, and live in underground burrows. Depending on the climate they live in, Ground Squirrels will hibernate during the winter months.

Squeek the Squirrel is from the A/V Geeks Film Archive and posted under a Creative Commons Liscence.

Flying Squirrels

Flying Squirrel on log

Flying Squirrels, which jump out of trees and glide on the membrane that stretches from its front legs to the rear legs, are nocturnal animals that live in tree hollows or built nests. The Giant Flying Squirrels of Asia can grow to be as large as thirty-six inches long, while the species that live on our continent generally grow to be about ten inches long.

Sources

How Stuff Works: Squirrel

Land Mammals of British Colombia: Squirrels

Marmots of the World

Wildlife Online: Tree Squirrels

Images from the U.S. Fish & Wildlife Service National Digital Library

U.S. Fish & Wildlife Service

Retrieved January 23, 2011.

Fox Squirrel Eastern Grey 
	Squirrel Ground Squirrel Red Squirrel