Its not the pen that hurts the dog its the trainer inexperince and not knowing what he is doing is what ruins the dog . How much is to much , How much is not enuff, hog big a hog do I use , how ruff is my dog getting do I need a bigger hog are a littler hog what do I do, is my dog to young, why want he start , how do i get him started and so on and so fourth that hurts are ruins the dog not the pen .
yes indeed...