Nothing wrong with treadmills in my experience, I dont own one anymore, but have used them with various dogs back in the 90s, they can be used to get a dog really fit if used correctly as part of a training program and good diet. Most of the knockers have never used them and are too closed minded to try anything they dont understand. I wouldnt be looking to build a pups fitness on a treadmill or any other way for that matter, for me a pup just needs walking and socialising and training, obedience etc. Fitness can be worked on when the pup is physically mature, having said that it would bene