I didn't know where exactly to put this since its puppy related but I don't know if its really "basics" related. How do you go about building ball drive in a puppy? I'm possibly putting a deposit on one of two puppies today (one puppy is 5 weeks old on Sunday and the other is 4 weeks on Tuesday). I wanted to know how to go about it in case he lacks the drive I would like. Both puppies have the same father but different mothers and I'm going to discuss with the breeder which puppy would match what I'm look for better.