Table 2.

Ethogram of social behaviors in the field.

Category	Behavior	Description
Affiliative	approach	approaching a stationary squirrel or following a moving squirrel without threat posture characteristic of chase behaviors
	social investigation	See ‘Social investigation’ category in Table 1
	play	two squirrels engaging in any non-snout directed physical contact, including mounting, boxing and wrestling
	proximity	within two body-lengths of another squirrel but not engaging in other social behavior
Agonistic	chasing	aggressive pursuit of another squirrel, typically preceded or followed by a threatening posture involving an upright stance and tail flicking