My dog is about to turn 2 in a couple months. He is a 70 lb black lab, whom I've had since he was 10 weeks. As soon as I got him, I began to socialize him at a nearby 25-acre dog park with a lake. He would be overly frantic and excited and almost completely manic when we got there and would not listen to any of my commands. I corrected this behavior over time as he got used to the atmosphere of the park and eventually he would listen to my commands and I would not let him enter until he was calm, composed, and quiet.
Leo has never been aggressive towards another dog, never been in a dog fight, and never bitten anyone or any other animal.
Recently, I moved to an apartment that has a small dog park (about 40 yards by 30 yards) and I take him there in the mornings and evenings to do his business. The previous behavior has returned, double-fold. He is so frantic that, despite putting him on a leash, he rips his head out of his collar (which is definitely not loose!). This behavior occurs in the park when he sees any other dog approach, or outside of the park when we are approaching and there is another dog or dogs in the park. Once he gets in the park, he acts aggressively towards other dogs, trying to dominate them by intimidation, humping, or barking at them; As time goes on, the other dog will get used to him and then they both calm down and he's back to his normal, playful, and friendly self.
This being said, I cannot let this behavior go on, but I'm scared he's going to get out of his collar and run into the streets. I've been thinking about using a spray that will distract him from his behavior, but I seriously would rather not resort to this option unless absolutely necessary. Please help me!