Your mechanic may be right. Or maybe not. If he is willing to testify in court you can hire a lawyer and sue them for fraud but, IMO, it is an...

Yes that is one way to prove possession.........

Legal as in can he be arrested for that? Yes, it's legal. You can still contest the ticket.

Great question for your lawyer. Depends on all the facts, which we don't have.

Sticks and stones as my mom used to say. Nothing to sue for.

You haven't stated what you think the bar did improperly.

This is not grounds for a change of venue.......

How was the vet supposed to know it wasn't a stray?

You are asking for a detailed analysis of a case you are not involved in, and that we know nothing about. We can't predict the outcome.

This is a Q&A forum. You have not asked a question.