I am pretty sure the two dog parks you listed are actually one. The Paw Dog park is at Lake Hefner. I take my dog to the dog park regularly. Our fence is not secure enough to keep her in so the dog park is the only place I can let her go without the leash and just let her run. I have seen aggressive behavior from the dogs there but have not ever seen any injuries. The dogs usually work the alpha issue out amongst themselves and the only problems I see is when the owner's try to interfere with that process. Owners must keep an eye on there pet at all times, not only to pick up poo but to curb any overly aggressive behavior. There are times my dog will pick on smaller dogs to establish the alpha and we leave. Period. But that does not happen very often. In my opinion, the smaller dogs should use the small dog park.