Take a look at the thumbnail of todays tip of the day, 2 dogs one small and one larger, both "smiling" but wait, both trained on shock collars, how could that be?
It seems that anytime folks see a "happy" dog, they assume they are being trained with "happy" training and whenever they see a "sad" dog they are being trained with "sad" training or with punishment, force etc...well, the dogs in the photo have had plenty of punishment and a lot of rewards ...usually the mix is 90% rewards and 10% punishment.