A tired dog is a good dog, right? Well that is not necessarily true for puppies.
Injuries to the growth plate may not heal properly or not heal in time for the puppy to grow up straight and strong. Injury to a growth plate can result in a misshapen or shortened limb which, in turn, can create an incorrect angle to a joint which can make the puppy more prone to yet more injuries when he grows up.
Please refer to the Puppy Culture's Exercise Guideline for Puppies
Future Owners - Please read "Puppy Fitness that Fits the Puppy - Age Appropriate Guidelines" by Jane Killion http://www.puppyculture.com/appropriate-exercise.html
