Facts About the Gray Squirrel

Step out into your backyard or take a visit to your local park and it is likely a squirrel or two will cross your path. There are a number of different species of squirrels and the gray squirrel is among the most recognizable. Gray squirrels are generally classified as western or eastern, and their characteristics vary depending on which part of the country they're found in.

  1. Physical Characteristics

    • The western gray squirrel typically grows to approximately 24 inches in length and weights between 12 and 33 ounces, according to the University of Washington. Eastern gray squirrels are slightly smaller, generally averaging approximately 20 inches in length and weighing up to 32 ounces. Western gray squirrels are characterized by larger ears and a longer, bushier tail. The ears of the western grey squirrel also feature bushy tufts of hair, while those of the eastern grey squirrel do not.

    Diet

    • Generally, the diet of both the western and eastern gray squirrel consists of nuts, acorns and seeds, although the specific varieties depend on their location. Gray squirrels tend to collect extra food and store it near their nest as a reserve food supply in colder months. Gray squirrels may also chew on tree bark, branches, pine cones or pine needles.

    Habitat

    • The western gray squirrel is native to several western states, including Washington, Oregon, California and certain parts of Nevada. They can be found in oak woodlands and coniferous forests and in some instances, at high elevations. According to the Smithsonian National Museum of Natural History, eastern gray squirrels may be found anywhere in the U.S., although they are primarily confined to areas east of the Mississippi River. Eastern gray squirrels are known to inhabit a wide range of areas, including deciduous woodlands, urban parks and suburban areas.

    Reproduction

    • Both the eastern and western gray squirrel tend to mate during the late winter season, with a gestation period lasting approximately 43 days. Their smaller size typically limits the eastern gray squirrel to two or three offspring while the western gray squirrel may produce up to five offspring. Typically, gray squirrels produce one litter during the spring and another during late summer. According to the Smithsonian, eastern gray squirrels typically have a shorter lifespan averaging just 10 to 11 months, while western gray squirrels tend to live for several years.

    Warning

    • Generally, it is not advisable to attempt to keep a squirrel as a pet. If you plan to do so, consult a qualified veterinarian to determine the level of care required and the risks involved. You should also check local and state laws to determine whether keeping a pet squirrel is legal.