Sorry to hear of your difficulties. You have several issues here. I am not an attorney (thank goodness) and can't voice an opinion on legal issues, but here are some considerations as I best know them.
Good luck with your fence, your neighbor and city hall.
Question:
I have a problem! My dog keeps jumping my fence at the joining corners. It's a 6 foot fence and I was wondering if you had a solution. I don't think it's right to tie my dog up. I want to modify my fence in a way that it will look nice , yet be affective.
I agree, it would be cruel to tie any dog up with a chain.