An off leash Chihuahua? Unbelievable?? Not with Sit Means Sit. Darin Shepherd of Sit Means Sit - Atlanta is seen here with a 16 week old Chihuahua named "Underpants". At Sit Means Sit, even little dogs deserve to have fun and freedom. For more information on Sit Means Sit Dog Training in Atlanta Georgia see: http://www.sitmeanssit.com/dog-trainin