It is not enough to simply provide a citation for your answer, since I want to give you as much credit for your work as I can. Instead, write down your "Research Trail"; that is, tell me all the databases you choose to use and why you chose them, and provide me with all your search queries, spelling out your terms and your logic connectors. If you're doing this manually, provide me with your major legal topics and subtopics. In short, I want to give you credit for all your work, so show me not just your final answer but how you got there.

1. You are going to the Hair Salon at the Chestnut Hill Mall in Newton, Massachusetts. While you are waiting at the Salon, the owner comes in with his Leonberger dog on a leash. The owner is distracted by his conversations with various personnel in the salon and you, without asking, pet the dog. The dog bites you. You would like to sue the owner but his insurance company tells you that, since you petted the dog without seeking the owner's permission, you were in fact a "trespasser" as defined in M.G.L. c. 140 § 155. They say that, as a trespasser, you cannot maintain a suit for damages. Is this a correct understanding of the law?