Not saying it cant be done but your best of starting with a dog bread for treeing squirrels. Curs and Feist make the best squirrel dogs and will still tree a possumn or coon at nite. I love feist, smaller than curs. Check this site out, but be sure to post and ask LOTS of questions before buying a dog or pup (if you do). There are always those puppie mills selling off junk. WWW.SQDOG.COM