I see and read this all the time but is there really solid evidence behind it?
How do working collie pups and other working dogs limit themselves to this level of exercise? Plenty of wild dogs and wolves don't limit movement in this way. Surely their joints are not dissimilar to pet or working dogs.
I protect her joints but not going up/down stairs and lifting into the car. I have mostly stuck to this for formal walks but my dog has so much energy and is much happier after energetic exercise.
What do others think?