Anyonw know much about the local WA laws on this?

We are staying at a dog friendly accom and our staffy attacked the neighbours dog. Now I'm 100% against this. But our dog has never done this before in his 5 years. He plays great with all other dogs.

Now this dog, a small white fluffy wandered into our yard and my dog went over to say hello. All of a sudden the little one growled and my dog attacked it. I got him off pretty quick but not before the owner of the other dog went into histerics (understandably)

I felt sick that it happened but we stopped it pretty quick, and I offered to pay the vet bills (as they wanted to have their dog checked out) and after the vet visit teir dog was fine. (a small puncture mark so they gave it some antibiotics just incase)

Anyway the lady wants all my details, not really sure I wanna give er them.

What's the go here? Could I get in trouble? Should I bail in the middle of the night and not come
Back? ha