I am very sorry you had your dog threatened at BX Ranch Park. I have had similar experiences with aggressive and over-active dogs, especially as the park becomes more popular, but it is not the dogs that are at fault.
Regardless of their breed, it is always the owner that is responsible for their dog’s behaviour. I meet many dominant/excited/aggressive dogs every day and since I never have my dog on a leash, I must predetermine if there may be problems.
In the past I have been too trusting of owners feeling that if you have a dangerous or aggressive dog you should either have complete control of your dog or not be in the park. Such is not the case so I will sometimes ask an owner if their charge might have a problem with my dog. Since my dog was attacked, I keep her in much closer proximity. I am glad your dog was unharmed but it is frightening for owners having their beloved dog in harms way.
I would ask that anyone who has similar problems take down information about the dogs and walkers and maybe attempt to get names of witnesses or a description of car or license plate. I also was too shocked to react in a logical manner in the aftermath of my dog being in the grasp of a dangerous dog but managed to write some information down and those individuals have never been back to BX.
With regards to Cesar Millan, the Dog Whisperer, I watched an episode in which he was viciously attacked by a “non” dangerous dog and his comment was ”I don’t usually mention that I have had to deal with 31 pit bulls and have never been bitten,” but this dog ripped his hand and it festered as the program continued. The dog was a dachshund.
More and more park users are having their dogs trained by professionals, especially puppies, which make the parks safer for all. It is imperative that owners learn about themselves and their dogs so these events are minimized. We, as park users, must continue to bring awareness throughout our community.
There are some very excellent training collars on the market that make life a lot easier for all. If you have a problem dog, even the over-friendly type that charges around looking for fun and ends up in a snarl, get yourself and it trained.