Public dog parks, which make up the vast majority of local dog parks, do not have competent supervision («swim at your own risk»). (poochprofessor.com)
That's why we partner with local dog trainers in each city to help spread the word. (vitabone.com)
To find them, you can consult local dog clubs or go on the Internet to find reputable breeders. (articles.orlandosentinel.com)