My dog was bitten by another dog, is the owner required to pay the vet bill?

You can make a claim for the injruies to your dog and some homeowners insurance will cover it (i.e. your neighbors homeowners insurance). You can sue the neighbor in small claims court and potentially recover the costs of the vet bills if his insurer won't pay and he won't pay (it works like those TV shows like Judge Joe, Judge Judy, etc.). Forms are available at teh state judicial website or any court clerk's office.  IF his dog got a "vicious dog" type ticket, paying resitution (i.e. your vet bills) is often a part of resolving those cases, so talk tot he prosecutor.