By: Betty Chu
Mario has been settling into the family and training for many months now, learning all that he'll need to know to be a service dog to Shorty. And, it's now time to decide if he's got the chops to take the spot of Top Dog someday, when Hercules retires.
Is Mario ready for this big role?! Shorty breaks down his decision - watch it now:
Watch all the episodes at the Pit Boss: Shorty's Top Dog site >>