Originally posted by: mryellow2
Be careful of overrunning your dog while she's still young. My friend told me this story about this bitch that ran her puppy 5 miles everyday and messed up its hips.
from random website #12341352345541
http://www.goldendoodles.com/hd_mini_tutorial.htm
Exercise: Puppies, like babies, should receive age-appropriate exercise. They should be allowed to play or stop playing at will. They should not be encouraged to walk or run long distances or for long periods of time. Excessive leash walking, for example, can cause repetitive stress injuries to their developing joints and muscles. Excessive leash walking would be similar to walking on a treadmill, and should not be confused with the leisurely stroll taking time to smell the flowers. There is a huge difference between a puppy sprinting around the yard, stopping, and resuming play at will, and one who is kept moving at a consistent pace for the same period of time.
It is generally accepted that you should not jog with your dog until it is at least a year old, and then it should be kept in mind that their stamina needs to be built up over time.
Until they develop strength and good coordination, the risk of falling off stairs, or other high places, should be avoided.
Finally, the risk of repetitive stress injury to a puppy's growing body is a concern in the most general of senses. All joints, bones, muscles, ligaments, are at risk of injury if a pup is encouraged or forced to repeat the same motion over and over for an extended period of time. This can include, but is not limited to, long walks at a constant pace, trotting for long distances, excessive stair or hill climbing. If done in moderation, these things can be safe and beneficial; if taken to excess, it has the potential to damage their growing bodies. Your puppy needs exercise to develop properly, just remember they are babies at 9 weeks, and only young adults at one year, scale their exercise to their developmental stage.