i am getting a puppy soon so have been reading everything i can find. a lot of people are saying it is better for puppies to get worn out with play where they can stop and rest often than with walks. this is for the reasons westtexas was saying. and i have heard the no jumping but does fetch with the ball low so not jumping to get it work? a lot of people i am talking to use fetch to tire their dogs out when they physically can't get as much exercise themselves. and also everything i have read says it is as important to get them mentally worn out as physically.