"these golden retrievers were unlicensed and unleashed, they jumped their owners yard"
On these facts, the dogs' owner is in violation of the law. They were neither licensed, nor under the owner's control at the time of the attack.
Once you have documented ALL expenses from the attack you can send a demand letter to the owner. When s/he ignores that letter, as many do, you can bring a small claims action in district court.
The foregoing is for general information purposes and does not establish an attorney-client relationship.
Pursue your monetary losses in small claims court at Hingham District Court.
To questioners from West Virginia & New York: Although I am licensed to practice in your state (in WV, on inactive status as of 9/13), I practice on a day-to-day basis in Massachusetts. I answer questions in your state in areas of the law in which I practice, and in which I feel comfortable trying to offer you assistance based on my knowledge of specific statutes in your state and/or general principles applicable in all states. It is always best, however, to work with attorneys and court personnel in your own area to deal with specific problems and factual situations.
Get all of your receipts together and send a demand letter for payment to the owners. Follow up on report to the Town Dog officer. If you do not receive payment shortly, file a claim in small claims court.