how long is the lifespan of a common grey squirrel?
<answer> The average life span of grey squirrels is between 11 and 12 months. <context> Average Life Span in the Wild. The average life span of grey squirrels is extremely brief -- generally only between 11 and 12 months, according to the Smithsonian National Museum of Natural History. Despite this brevity in life expectancy, some free roaming grey squirrels have actually surpassed 10 years in age. In Captivity A single female grey squirrel that resided in a captive environment greatly outlived the typical life span of her species, making it to over 20 years old, reports the University of Michigan's Animal Diversity Web.