I have been searching for great dog park in LV and finally found it! Just started going 2 weeks ago. I have a small 5 lb dog and find that the larger dog owners in a lot of park feel that just because their dog is "nice" supposedly that they can bring it in with little dogs. This did happen the first day but the women kept her dogs close to her and since the area is so large it did not matter. She apologized and said that the large dog owners were being irresponsible and the dogs were snipping and biting at each other. She let her dogs do her business, cleaned up, and left.
Besides that the god owners are very nice and friendly. There is tons of room to play and let your dog run. All of the dogs I've met have great personalities and if your dogs a loner they leave them alone, too! Very clean and well planned out!