i am getting ready to let my 8-9 week old.......BIG......girls out to free range around the yard a little bit. the problem is my 11 month old pug pup. she is so interested in them.......not in a bad way just a "i would like to chase you around" way...... and they have NO FEAR of her..........like they would not even try to get away. i have a very bad vision of an accident happening. i will, of course, supervise them but would eventually like them to all get along together without me having to monitor everyone every minute. any tips on how to best achieve this goal?