My dog Harley is a 20 pound cockapoo and has a lot of energy. So, I've been an ongoing frequenter to the Chaparral Dog Park. It's an awesome park and I'm so happy it's close enough for me to visit. Harley is the dog who tries to become friends with every dog in the park. Some accept the friendship and some snub him. I can't help but feel bad for him when he gets snubbed. But, regardless of friend or foe, I've never had a scary dog encounter with Harley at the park.
The park has two sides, one for smaller dogs and one for "active" dogs. If you have a dog that's under 15 pounds, don't even try to go into the active dog area. Both sides are great and during the nice weather, they are full of dogs for your pup to play with. The park has a some shaded areas to sit while your dog plays and some water areas for your dog to cool off and have a drink. It's a spacious area so I rarely feel cramped, even on the crowded days. I've always been pleasantly pleased to see how friendly the other dog owners are and like I said, the dogs who visit are well-mannered and not aggressive.
So in summary, both Harley and I are fans of the dog park...but I think Harley might have more fun than me.