Neighbor’s Dog on Your Property in Maine: What the Law Actually Says

Finding a neighbor’s dog on your property — whether it is digging up your garden, threatening your pets, or simply wandering through your yard — is more than a nuisance. In Maine, it is a situation the law takes seriously, and you have more legal tools available to you than most people realize.

Maine’s statutes address animal trespass, owner liability, at-large violations, and even the narrow circumstances in which lethal force is legally permitted. Understanding where each of these laws applies helps you respond effectively without overstepping your own legal boundaries.

Pro Tip: Maine law operates on two levels — state statutes and local municipal ordinances. Always check your town’s animal control rules in addition to what Title 7 of the Maine Revised Statutes requires, because your municipality may impose stricter standards.

Is It Illegal for a Neighbor’s Dog to Be on Your Property in Maine?

The short answer is yes — under specific conditions, a neighbor’s dog being on your property without permission can constitute a legal violation in Maine. Under Maine’s animal trespass statute, an owner or keeper of an animal may not allow that animal to enter onto or remain on the property of another after the owner or keeper has been informed by a law enforcement officer, an authorized employee of the department, or an animal control officer that the animal was found on that property.

This means the first incident may not automatically trigger a violation — the law focuses on continued trespass after proper notice has been given. However, the at-large statute provides a separate and broader basis for enforcement even before formal notice is issued.

Maine has a dogs at-large law under Title 7, Section 3911. It makes it unlawful for any dog, licensed or not, to be at large. A dog is considered “at large” when it is off its owner’s premises and not under the control of its owner or handler. So if your neighbor’s dog is roaming freely into your yard without supervision, it is already in violation of state law — regardless of whether it has caused damage.

Under Title 7, Chapter 727, owners must keep their pets under control to prevent roaming, which safeguards the public and reduces risks to the dogs themselves. Responsibility rests firmly with the dog owner, not with you as the property owner dealing with the intrusion.

At-Large and Leash Laws That Apply in Maine

Maine does not have a statewide leash law in the traditional sense — meaning there is no single statute that requires all dogs to be physically tethered at all times when off their owner’s property. What the state does have is a broad prohibition on dogs running “at large.” Under 7 MRS §3911, it is unlawful for any dog, licensed or unlicensed, to be at large, except when used for hunting.

The term “at large” is defined under 7 MRS §3907(6) as off the premises of the owner and not under the control of any person whose personal presence and attention would reasonably control the conduct of the animal. This definition is broader than many people expect.

Under Maine law, “under control” does not necessarily mean on a leash. But it does mean the dog has to actually respond to the owner. A dog that ignores every command and wanders wherever it wants is not under control, even if the owner is standing right there calling its name. If a dog is off the owner’s property and not reliably under the owner’s control, it is legally at large under Maine law.

Even though the state does not require a leash, a municipality can. Many Maine towns have local ordinances that do require dogs to be leashed in certain areas, like town parks, downtown areas, or near schools. For example, in Portland, a dog must be on an eight-foot maximum leash on all streets and publicly owned property, including Back Cove and the Skate Park.

You can learn more about how these rules vary across the state in this overview of Maine leash laws and this deeper look at dog leash laws in Maine.

Key Insight: The hunting exception under 7 MRS §3911 is the only statewide exemption from the at-large prohibition. If your neighbor claims their dog was “hunting,” that does not give it unlimited license to roam through your property without consequence — especially if damage occurs.

What to Do When a Neighbor’s Dog Won’t Stay Off Your Property in Maine

When a neighbor’s dog keeps entering your property, a measured, documented approach gives you the strongest legal position. Start with direct communication — many dog owners are unaware their pet is roaming, and a calm conversation can resolve the problem before it escalates.

If informal resolution fails, your next step is contacting your local animal control officer (ACO). Animal control officers in Maine play a vital role in ensuring compliance with dog ownership laws. Under Title 7, Chapter 725, these officers investigate complaints, capture stray dogs, and enforce licensing and vaccination requirements. Filing a complaint with your ACO creates an official record, which matters significantly if the problem continues.

The owner or keeper of an animal is responsible, at the owner’s or keeper’s expense, for removing any animal found trespassing. An animal control officer, authorized employee of the department, or law enforcement officer may, at the owner’s or keeper’s expense, remove and control an animal found trespassing once the owner has been notified and fails to act.

Practical steps you can take on your own property include:

• Installing or reinforcing fencing along shared property lines
• Using motion-activated deterrents such as sprinklers or lights
• Documenting each incident with photos, timestamps, and written notes
• Sending a written notice to the neighbor (certified mail creates a paper trail)
• Filing a formal complaint with your local ACO or law enforcement

If you are also dealing with a neighbor’s cat entering your yard, the legal framework differs — see this guide on neighbor’s cat in your yard laws in Maine for a comparison.

Who Is Liable for Damage Caused by a Neighbor’s Dog in Maine?

Maine places liability squarely on the dog’s owner or keeper when a dog causes damage off its owner’s premises. When an animal damages a person or that person’s property due to negligence of the animal’s owner or keeper, the owner or keeper of that animal is liable in a civil action to the person injured for the amount of damage done, if the damage was not occasioned through the fault of the person injured.

For dog bites specifically, Maine goes further. Maine has a strict liability dog bite law. If a dog bites someone while it is at large, the fact that Maine has no statewide leash law will not protect the owner from civil or criminal liability.

When a neighbor’s dog kills or injures your pets or livestock, a separate statute applies. The owner or keeper of an animal that, due to negligence, kills or injures livestock, poultry, domestic rabbits, or pets commits a civil violation for which a forfeiture not to exceed $100 may be adjudged in addition to costs. Beyond that fine, a person who suffers damage as a result of such a violation may also pursue a civil action against the owner or keeper of the animal pursuant to section 3961.

If two or more dogs from different owners are involved in a joint attack, if any properly enclosed livestock, poultry, domestic rabbits, or pets are killed or injured by two or more dogs at the same time and the dogs are kept by two or more owners or keepers, the owners or keepers are jointly and severally liable for the damage.

Type of Damage	Legal Basis	Remedy Available
Property damage (general)	7 MRS §3961 (negligence)	Civil lawsuit for damages
Injury or death to pets/livestock	7 MRS §3962-A	Civil violation fine + civil lawsuit
Dog bite (off owner’s premises)	7 MRS §3961 (strict liability)	Civil lawsuit; no negligence proof required
Repeat trespass violations	7 MRS §4041	Fines of $50–$1,000+; forfeiture possible

To see how Maine’s liability framework compares to neighboring states, you may find it useful to review neighbor’s dog on your property laws in New York or neighbor’s dog on your property laws in Ohio.

Can You Legally Remove or Detain a Neighbor’s Dog in Maine?

This is an area where many property owners get into legal trouble by acting without authority. In Maine, the power to formally remove or impound a trespassing dog belongs to animal control officers, law enforcement, and authorized state employees — not to private citizens acting unilaterally.

An animal control officer, authorized employee of the department, or law enforcement officer may, at the owner’s or keeper’s expense, remove and control an animal found trespassing if the owner or keeper fails to remove the animal after having been notified, or if the person fails to remove the animal within 12 hours — or immediately if public safety or private or public property is threatened — after having been personally notified by an animal control officer, an authorized employee of the department, or a law enforcement officer that the animal was trespassing.

You may gently contain a dog on your property temporarily — for example, closing a gate to prevent it from running into traffic — while you contact animal control. However, detaining a dog for an extended period, refusing to return it to its owner, or using any form of force to restrain it goes beyond what Maine law permits for private citizens and could expose you to legal liability.

An animal control officer may also remove an animal if the owner’s animals have been found trespassing on five or more days within a 30-day period, or three or more days within a seven-day period. These thresholds are important — they define when a pattern of trespass becomes serious enough to trigger official removal authority.

Important Note: Do not attempt to transport, relocate, or surrender a neighbor’s dog to a shelter on your own. Doing so without legal authority could be treated as theft or interference with another person’s property under Maine law. Always route these situations through your local ACO.

Can You Harm or Kill a Dog That Trespasses on Your Property in Maine?

Maine law sets a very narrow and specific standard here. Harming or killing a dog is not legally justified simply because it is on your property without permission. The threshold is immediate, active threat — not mere presence.

Any person may lawfully kill a dog if necessary to protect that person, another person, or a domesticated animal during the course of a sudden, unprovoked assault. This provision exists separately from the dangerous dog process and does not require a court proceeding. But the word “necessary” carries real legal weight — the threat must be immediate and unavoidable, not speculative or preventable by other means.

A dog simply wandering across your lawn, sniffing around your garden, or even barking at your fence does not meet this standard. The assault must be sudden and unprovoked, and lethal force must be the only reasonable option in that moment.

If you harm a dog outside of this narrow self-defense window, you could face animal cruelty charges under Maine Title 7, Chapter 739. Maine’s animal cruelty laws carry significant civil and potentially criminal penalties. The safer and legally sound path is always to contact animal control and document the threat rather than take direct action.

For comparison on how other states handle this question, see neighbor’s dog on your property laws in Texas and neighbor’s dog on your property laws in Colorado.

When to Contact Animal Control in Maine

Knowing when to involve your local animal control officer — rather than handling the situation yourself — protects you legally and creates the official record you will need if the problem escalates.

Contact animal control when:

1. A neighbor’s dog has entered your property and the owner cannot be reached or refuses to retrieve it
2. The dog has caused damage to your property, injured your pets, or threatened you or a family member
3. The dog appears injured, sick, or abandoned
4. The trespass is recurring despite your attempts to address it directly with the neighbor
5. The dog is displaying aggressive behavior, even without a physical attack

A person whose property or crops have been damaged by a dog, within 30 days of the incident, may make a written complaint to the sheriff, a local law enforcement officer, or an animal control officer that the dog is a dangerous dog or a nuisance dog. This 30-day window is important — do not wait too long after an incident to file.

A representative of the sheriff’s department, a local law enforcement officer, or an animal control officer appointed by the municipality shall investigate and document the complaint. Upon completion of the investigation, the investigator may issue a civil violation summons for keeping a dangerous or nuisance dog.

Animal control officers also have authority to pursue forfeiture actions in serious repeat cases. If the department, a municipality, or a law enforcement agency determines that a repeated violation of the animal trespass section by an owner or keeper jeopardizes the public health, welfare, or safety of the community, the department, municipality, or law enforcement agency may bring a forfeiture action in the county in which the violations occurred.

How to Document and Build a Case Against a Repeat Offender in Maine

If a neighbor’s dog repeatedly enters your property and the owner refuses to take corrective action, building a documented record is what turns a frustrating neighbor dispute into an enforceable legal claim. Maine’s trespass and nuisance dog statutes both reward a well-documented complaint.

Here is what your documentation should include:

• Date, time, and description of each incident — written notes made the same day are most credible
• Photos and video showing the dog on your property, any damage caused, and the dog’s condition
• Records of communication with the neighbor — text messages, emails, or notes from in-person conversations
• Animal control reports — every call you make generates a record; request copies
• Veterinary bills or repair estimates if the dog has caused physical harm to your animals or property
• Witness statements from anyone else who observed the incidents

Repeat violations carry escalating consequences under Maine law. A person who violates the animal trespass section commits a civil violation for which a fine of not less than $50 nor more than $500 must be adjudged. A person who violates this section after having been previously adjudicated of a violation commits a civil violation for which a fine of $1,000 must be adjudged.

For the most serious repeat offenders, when an owner or keeper violates the trespass section three or more times within a 90-day period, the court shall order restitution of all costs incurred by the department in responding to a violation or assisting an animal control officer or law enforcement officer responding to a violation.

If the dog has caused injury or you want to pursue a dangerous or nuisance dog designation, a person whose dog a court determines to be dangerous or a nuisance commits a civil violation, and the court must impose a fine of not less than $250 and not more than $5,000, plus costs — none of which may be suspended.

Once a court designates a dog as dangerous, it may also order additional remedies. The court may order the dog to be securely muzzled with a basket-style muzzle, restrained by a leash not more than 3 feet in length with a minimum tensile strength of 300 pounds and under the direct control of the dog owner or keeper whenever the dog is off the owner’s or keeper’s premises, and may order the owner or keeper to obtain a minimum of $100,000 in liability insurance for the life of the dog.

Pro Tip: Keep a dedicated log — a simple notebook or a notes app on your phone works fine. Courts and animal control officers give more weight to contemporaneous records (made at the time of the incident) than to accounts reconstructed weeks later from memory.

Maine also empowers municipalities to go further than state law allows. Each municipality is empowered to adopt or retain more stringent ordinances, laws, or regulations dealing with the subject matter of this chapter. That means your town may have additional enforcement tools available that go beyond what Title 7 requires — another reason to check your local ordinances and work closely with your local ACO throughout this process.

If you are navigating similar issues in other states or want to understand how Maine compares to nearby jurisdictions, these state-specific guides may help: Washington, North Carolina, Georgia, Indiana, Florida, and Missouri. Maine property owners with livestock or other animals may also find value in reviewing backyard chicken laws in Maine and goat ownership laws in Maine, since dogs interacting with those animals trigger specific liability provisions under state law.