|Female Sciurus Carolinensis|
For what it's worth, we prefer "studs and vixens", thank you very much.
|Male Sciurus Carolinensis|
Stud squirrels are typically more independent, less sociable. If you find a squirrel eating from your hand it is far more likely to be female. During courting season we boys will challenge each other but will avoid physical conflict as much as possible. We chase the females until they let us catch up to them.
Vixen squirrels are slightly smaller but tend to have more "personality". They are more adventurous than their relatively skittish male relatives, although this difference narrows as we all enter our dottage.
Hey, if you think discerning the gender of squirrels is a challenge, when was the last time you went downtown on a Saturday night?