I think for the right dog darks parks are a great tool. It think that when I had Missy it helped me to train her. Because before I never had the chance to have her off leash in a distracting setting, so I was able to teach her to come when I call her. THen on the occasion she would run out of the house the second I would call her name she came running to me. Taking her to the dog park also made it so much easier for me to just take her out in general. Before I started taking her to the dog park I had a hard time taking her to Petsmart because she would bark at every dog she saw, not in an aggressive way, but she wanted to play with every single dog she saw. It also taught her patience, because she learned that if she pulled or wasn't behaving we would not go into the park until she settled.