Social system - Hierarchies define the relationships among gray squirrels living in close proximity. Older, larger adult males dominate smaller males. Females are subordinate to males except when litters are present. At this time, females defend small territories around their dens or nests.

Do squirrels have a social hierarchy?

"Eastern gray squirrels are not territorial but do form dominance hierarchies in which they establish dominance over each other," said Michael Steele of Wilkes University in Pennsylvania, who has studied squirrel behavior. "Establishing dominance involves aggression and chasing."

Do squirrels stay together as a family?

They will live for several months as a family unit. This is the time when you will often see the young squirrels chasing each other around yards and parks, running after each other up and down and around trees. Eventually, in early fall, the young squirrels will leave to establish their own nearby territories.