Eastern grey squirrels commonly occur in two colour phases, grey and black, which leads people to think—mistakenly—that there are two different species. The most notable physical feature of the eastern grey squirrel is its large bushy tail. The tail has many important functions. It acts as a rudder when the animal jumps from high places, as a warm covering during the winter, as a signal to other eastern grey squirrels indicating an individual’s mood.
