This is kind of a long story, but I would like to ask you all for your advice on this matter.
Today, we went to the dog park with our dog and my friend's dog. I watched my friend's dog, while my husband kept an eye on our dog. They were never out of our sights and we kept track of them the entire time that we were there. My dog was playing with a group of dogs, when there was a bit of a commotion. My husband had already started walking over to check things out. When he got there, he found that a dog had been injured and its stomach had a big gash on it. As he approached the site, the injured dog's owner was telling another man that his F***ing dog hurt his dog and to get it the F out of here, then he turned and saw my husband. At that point, the man that was being yelled at and his dog took off. Then the man asked if this was his dog (ours) and said that our dog had injured his dog. Never one to ignore his responsibilities, my husband asked about the dog and saw the injury. He offered to drive them to the emergency vet and when the man asked for his phone number, he gave it to him. The man declined his offer to drive him to the vet and just took his phone number and said that he would call us with the bill.
However, we're not sure our dog did it. As soon as my husband reached the site of the accident, he grabbed our dog and held onto his collar, after checking the injuries on the other dog, he brought him directly over to me and briefly explained the situation. I leashed the two dogs and started checking my dog for injuries of his own and blood. There wasn't ANY blood on him at all. Not on his face, not on or in his mouth, not on his paws or the rest of his body. If he had indeed injured that dog, he would have had some blood on him. He wasn't licking his mouth or face or cleaning himself in any way after the incident. Thankfully, he did not have any injuries of his own either. It is true that he was playing with and chasing the dog, but there were 5 other dogs playing together. I overheard some witnesses talking about the incident (they didn't know that I was behind them) and they said that it looked like the dog was running and it tripped and flipped over, when it got up, it had the gash on its side. They did not implicate any of the dogs that were playing with the injured dog.
I know I'm his mom and my word doesn't mean much here, but my dog does not hurt other dogs. He is not aggressive in any way and he's one of the most submissive dogs I have ever seen. He likes to play wrestle and play chase and he's been very well socialized. He has played with hundreds of dogs and he has never hurt any of them. If I thought that he was aggressive in any way, I would never bring him to a dog park. I could really use your advice here. It's not that I'm trying to skirt our responsibility as a dog owner and we cannot prove 100% that he didn't hurt the dog, but there are so many things that don't add up for me. What should we do? Do we have any recourse?
Thank you all for your help!