The concerns mentioned are things to think about. We have no dog park at this time, but I have heard of a group of people getting together to raise funds to sponsor one. With all of the things mentioned, it would be good for me to get in on those meetings to find out what they have in mind. I guess there are risks, but I sure would like to see my dog be able to run free in a large area to his hearts content, be socialized and be able to play. He loves to run, and we live in the city with a medium size yard...... When my daughter was away at college, she took the dogs she fostered to a nearby dog park. One dog she fostered really needed the exercise and socialization and loved it. She did tell me that the park was not monitored as far as vaccinations, etc., but that most people were responsible with their dogs. I feel a little mixed about it, but I think a visit to the park, and getting a feel for what dogs are running around that particular day, as Bobs mentioned is probably a good idea.