Dog bites and homeowners insurance liability in Massachusetts.

Does homeowners insurance cover dog bites in Massachusetts?

In most cases, yes. Homeowners and renters insurance policies typically cover dog-bite liability, including the legal expenses, up to the policy’s liability limit. This is not a small corner of the policy. Dog bites account for about one-third of all homeowners insurance liability claims, and more than 50 percent of dog bites occur on the dog owner’s own property, which is exactly where your home policy responds.

The catch is the limit. If a claim exceeds your policy limit, you are personally responsible for every dollar above it, including legal costs. So the real question is not just whether you have coverage, but whether the limit is large enough for the way Massachusetts law treats dog owners. It also matters that coverage is not automatic. Some insurers offer a policy but exclude liability for any claims resulting from dog-bite incidents. If you own a dog, read that section of your policy or ask us to read it for you. For the broader picture of where liability sits in a home policy, see our guide on how home insurance works in Massachusetts.

Massachusetts is a strict-liability state under M.G.L. c.140 §155

Massachusetts does not use the old one-free-bite rule that lets an owner off the hook for a first incident. Under M.G.L. c.140 §155, if any dog does damage to the body or property of any person, the owner or keeper is liable for that damage. If the owner or keeper is a minor, the parent or guardian is liable instead.

This is a strict-liability statute. The injured person does not have to prove the owner was negligent, and does not have to prove the owner knew the dog was dangerous. That is the point of the law. It expands on the common law by eliminating the need to show the owner knew of the dog’s dangerous character and habits, or that the dog was actually accustomed to bite. The Appeals Court confirmed this reading in Irwin v. Degtiarov. In practice, liability attaches faster and more predictably here than in states that require proof of prior knowledge, which is one reason a homeowners liability limit deserves a hard look.

The exceptions: trespass, provocation, and the under-seven presumption

Strict liability is not absolute liability. Section 155 has built-in defenses. There is no liability if the damage happened to a person who, at the time, was committing a trespass or another tort, or was teasing, tormenting, or abusing the dog. A dog that reacts to a genuine provocation or an intruder is treated differently than a dog that bites without cause.

The statute also protects young children. If the person bringing the action was a minor under seven years old at the time, the law presumes the child was not trespassing, committing a tort, or teasing, tormenting, or abusing the dog. The burden of proof shifts to the defendant to show otherwise. That presumption is a heavy lift for a dog owner to overcome, which is part of why bites involving small children tend to produce serious claims.

Not every dog case runs through §155. Cases outside its scope fall back on common law. A landlord who is not the owner or keeper of a tenant’s dog, for example, is judged under ordinary common-law negligence principles rather than the strict-liability statute. Worth knowing if you rent out property where a tenant keeps a dog.

Breed restrictions and homeowners underwriting in Massachusetts

The homeowners market works differently from the auto market. Auto insurance in Massachusetts is take-all-comers; home insurance is not. Insurers may non-renew or decline a homeowners policy so long as the decision is not based on criteria barred by M.G.L. Ch. 175, section 4C. A dog can factor into that decision.

Carrier practices vary widely. Some insurers will not cover owners of certain breeds categorized as dangerous, such as pit bulls. Others decide case-by-case, looking at whether the individual dog has been deemed vicious rather than at the breed label. Some companies charge more for breeds such as pit bulls and Rottweilers, some require owners to sign liability waivers, and some do not ask about or track breed at all. Because the answer depends entirely on the carrier, this is a shopping problem, and it is one we handle by placing the risk with a carrier whose appetite fits your dog.

Massachusetts law itself pushes back on breed labels in a related context. Under M.G.L. c.140 §157, a dog cannot be deemed dangerous based solely on its breed, solely on growling or barking, or where its reaction was not grossly disproportionate to a provocation. That statute governs the nuisance and dangerous-dog complaint process, not insurance underwriting, but it reflects how the state thinks about breed generally.

How to keep coverage: mitigation steps insurers will accept

If a carrier balks at your dog, you are not out of options. The Massachusetts Division of Insurance lists specific evidence you can present to an underwriter:

• Certified obedience training records
• Veterinary and immunization records, plus spay or neuter status
• Photos proving the dog can be contained, such as a muzzle, dog run, fence, or kennel
• A written attestation from a neighbor
• Full disclosure of any prior bite

Some insurers will agree to cover a pet if the owner completes behavior-modification classes or restrains the dog with a muzzle, chain, or cage. Assemble this file before your renewal, not after a non-renewal notice arrives. An underwriter reviewing a well-documented, well-contained dog has a reason to say yes. Disclosing a prior bite is not optional, either. A concealed history that surfaces after a claim can undermine the coverage you thought you had.

When 100/300 isn’t enough: umbrella liability and dog bites

Most homeowners and renters policies provide $100,000 to $300,000 in liability coverage, often written as 100/300. Given strict liability and the under-seven presumption, a single serious bite can run past those numbers, and everything above the limit comes out of your own pocket.

A personal umbrella policy is the standard fix. Umbrella coverage protects against personal liabilities including dog bites and usually ranges from $1 million to $10 million, sitting on top of your underlying home policy. Insurers generally require a minimum amount of underlying coverage before they will sell an umbrella, typically at least $300,000 of homeowners liability. The pricing is modest relative to the protection. The first $1 million of personal excess liability coverage costs about $150 to $300 per year, the second million about $75, and each additional $1 million increment about $50 per year. Our Massachusetts umbrella insurance guide walks through how the layers stack. If you rent rather than own, the same logic applies through a renters policy, covered in our renters insurance guide.

What a dog-bite claim actually costs

The national numbers explain why limits matter. Liability claims tied to dog bites and other dog-related injuries cost homeowners insurers $1,862 million in 2025. The number of dog-bite claims nationwide rose to 28,450 in 2025 from 22,658 in 2024, a 25.6 percent increase. The average cost per claim fell 5.5 percent to $65,450 in 2025 from $69,272 in 2024, but averages hide the tail. New York’s average cost per claim reached $92,154 and Connecticut’s $87,751, both above the 100/300 lower band. The CDC estimates that more than 4.5 million people are bitten by dogs each year, resulting in roughly 800,000 injuries that need medical attention.

One average-cost claim already eats a large share of a $100,000 limit. A severe bite involving a child, with the burden-shifting presumption working against the owner, can exceed even a $300,000 limit. That is the case for reviewing your liability limit and, for most dog owners, adding umbrella coverage. We shop these placements across many carriers so the dog does not become the reason you lose coverage.