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

Finding a neighbor’s dog roaming through your yard, digging up your garden, or approaching your children can be frustrating — and sometimes alarming. Maryland law gives you more protection than many property owners realize, but it also draws firm lines around what you can and cannot do in response.

Understanding where state law ends and county ordinances begin is the first step. Maryland’s framework for dog control is a layered system: state statutes set the foundation, and individual counties build on top of that with their own at-large rules, fines, and enforcement procedures. What applies in Montgomery County may differ in detail from what applies in Garrett County or Anne Arundel County.

This guide walks you through every major legal question Maryland property owners face when a neighbor’s dog keeps showing up where it doesn’t belong — from whether the trespass is actually illegal, to who pays for the damage, to exactly what you are and are not allowed to do about it.

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

The short answer is yes — in most Maryland jurisdictions, allowing a dog onto someone else’s property without permission is a violation of local ordinance. Under Montgomery County Code Section 5-203(a)(3), for example, an owner must not allow an animal to enter private property without the property owner’s permission, with a $100 fine attached to violations. Any dog is at large if it is outside the owner’s premises and not leashed, unless it is a service dog, is in a designated dog exercise area, or is participating in an approved activity.

The same principle runs through county codes statewide. “At large” in Anne Arundel County means off the property of an animal’s owner and not leashed and under the control of a responsible person. In Garrett County, an animal is deemed to be at large whenever it is not on the owner’s property or under the immediate physical control of a responsible person capable of physically restraining the animal.

Maryland does not have a single statewide leash law that applies uniformly everywhere, but the legislative trend is moving in that direction. A 2026 bill introduced in the Maryland General Assembly (HB 1568) would require each county and municipality to adopt local laws or regulations prohibiting a dog from being at large, adding to the Local Government Article. Even without that bill, almost everywhere but the most rural areas has some sort of ordinance requiring animals to be on leash when not on the owner’s private property, or prohibiting dogs from being at large off the owner’s property.

The bottom line: if a neighbor’s dog enters your yard without your permission and without a leash, it is almost certainly violating your county’s animal control ordinance. That violation belongs to the dog’s owner, not to you.

At-Large and Leash Laws That Apply in Maryland

Maryland’s leash and at-large rules operate primarily at the county level, though the core definitions are consistent across most jurisdictions. The key legal concept is “running at large,” which carries significant consequences under both civil and criminal law.

Under Courts and Judicial Proceedings §3-1901, the state uses two overlapping liability frameworks depending on the circumstances. When a dog is running at large and causes injury, death, or property damage, the owner is strictly liable. “Running at large” means the dog is off the owner’s property and not under control.

Maryland law doesn’t have an exact definition of “running at large.” In general, it means the dog is not under anyone’s physical control. For example, if the owner is walking the dog and has a firm grip on its leash, the dog is not “running at large.”

County-level fines for at-large violations vary but follow a consistent pattern. In Montgomery County, the penalty is $100 for a first offense and $500 for each subsequent violation. Prince George’s County states that it is against the law for the owner or custodian of any animal to allow the animal to run at large, any dog or cat found at large may be impounded, and a violation notice may be issued to the owner by a county police officer or animal control officer.

Pro Tip: Look up your specific county’s animal control ordinance before contacting authorities. Knowing the exact code section — such as Montgomery County Code Sec. 5-203(a)(3) or Anne Arundel County Article 12, Title 4, Subtitle 9-905 — makes your complaint faster to process and harder to dismiss.

There is also an important nuance for HOA and condo residents. The common area of a homeowner’s association, condominium, or cooperative is not the owner’s premises. That means a dog roaming a shared courtyard or common green is legally “at large” even if the owner lives in the same complex.

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

When a dog repeatedly enters your property, your most effective first move is usually a calm, direct conversation with the owner. Most people are unaware their dog is escaping, and a simple heads-up resolves the problem without any formal process. Keep the tone factual rather than accusatory — you want compliance, not a conflict.

If the direct approach fails or is not safe, follow these steps:

1. Document every incident. Note the date, time, what the dog did, and any witnesses. Photographs and video are especially useful.
2. Send a written notice to the neighbor. A dated letter or text message creates a paper trail showing the owner was aware of the problem.
3. Contact your county’s animal control office. File a formal complaint. Animal control officers can issue citations, which puts the violations on official record.
4. Request a follow-up inspection. If the agency finds that the pet owner violated laws or ordinances, the owner may initially receive a warning — verbal or written — that includes the ordinance violated and the steps needed to comply. Animal control may also schedule a follow-up visit to ensure compliance, and if the problem persists, the violation could result in citations with fines.
5. Consult a local attorney if the intrusions are causing property damage or posing a safety risk. Civil remedies — including nuisance and trespass claims — may be available.

You may also consider physical deterrents on your own property: secure fencing, motion-activated sprinklers, or natural barriers like dense shrubs. These do not replace legal action but can reduce incidents while the formal process plays out.

If you are dealing with a neighbor’s cat rather than a dog, the rules differ somewhat — see our article on neighbor’s cat in your yard laws in Maryland for a full breakdown. For comparison with how other states handle this issue, you may also find our guides on neighbor’s dog laws in Pennsylvania and neighbor’s dog laws in Virginia helpful.

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

Maryland uses a strict liability framework for dog-related injuries and property damage, which is one of the stronger protections available to property owners in the region.

Maryland follows a strict liability rule for dog bite cases. This means a dog owner can be held responsible if their dog injures someone, even if the dog has no prior history of aggression. Maryland holds dog owners strictly liable when their unleashed dog causes injury, and the state ties licensing directly to rabies vaccination status.

An owner is strictly liable for any injuries or property damage caused by their dog while it is running at large. This covers not just bites, but also property destruction — torn gardens, damaged fencing, injured livestock, or harm to your own pets.

There are limited defenses available to the dog’s owner. Even if the dog was running at large, the owner is not responsible for injuries or property damage if the victim was trespassing or attempting to trespass on the owner’s property, committing or attempting to commit a criminal offense against any person or on the owner’s property, or teasing, tormenting, abusing, or provoking the dog.

Key Insight: Maryland’s strict liability standard means you do not need to prove the owner knew the dog was dangerous. If the dog was off-leash and off the owner’s property when it caused harm, liability attaches automatically — subject only to the narrow defenses above.

For property damage specifically, a dog’s intrusion on your property may constitute the civil tort of trespass and/or nuisance under Maryland law, though the real issue is properly pleading the case and proving damages. Small claims court is a practical option for lower-value damage claims. For significant losses, consult a Maryland attorney experienced in animal law or personal injury.

Homeowner’s insurance may also be relevant. If the dog owner has homeowner’s insurance, they should report the claim to their carrier, which should cover the claim and hire an attorney to defend them and pay any judgment rendered.

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

This is one of the most misunderstood areas of Maryland dog law. Your instinct may be to catch the dog and bring it to a shelter, but the law is more restrictive than most people expect.

You cannot take a neighbor’s pet to an animal shelter or anywhere else. You also cannot trespass onto a neighbor’s property to resolve an animal-related disturbance, and you may face penalties for crossing the boundary lines of your property onto a neighbor’s property.

The proper channel is animal control. As a practical matter, any dog at large may be caught and turned in to animal control, which typically requires the owner to pay release and boarding fees to obtain return of their dog and would probably result in a citation. This means you can contact animal control to come and pick up the dog — you are not expected to physically apprehend it yourself, and doing so carries risks both to your safety and your legal standing.

Unrestrained dogs, public nuisance animals, vicious animals, or domestic animals found at large shall be taken by an animal control officer, by any means necessary, and if restrained shall be impounded and confined in a humane manner. Impounded domestic animals, other than cats, shall be kept for 5 days. After that window, unclaimed animals may be transferred to county ownership.

If the dog is dangerous and actively threatening you or your animals, call 911 as well as animal control. Law enforcement officers in Maryland can respond to imminent danger situations involving animals.

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

Maryland law is unambiguous on this point: you cannot shoot, poison, or otherwise harm a dog simply because it is on your property. The state’s anti-cruelty statutes apply to all dogs, including those that are trespassing.

A person who intentionally inflicts bodily harm, permanent disability, or death on an animal — except in the case of self-defense — is guilty of the felony of aggravated cruelty to animals and on conviction is subject to imprisonment not exceeding 3 years or a fine not exceeding $5,000 or both.

Maryland courts have applied this standard directly to the trespassing dog scenario. In the case of Hurd v. State of Maryland, the court affirmed convictions for killing a neighbor’s dog that had wandered onto the defendant’s property. The court had no trouble finding that shooting the dog violated the criminal law provision that “a person may not intentionally cruelly kill an animal,” and the fact that the dog was supposedly chasing a turkey was no excuse.

None of the evidence in that case suggested that killing the dog was necessary or justified. Although the court agreed that both necessity and justification could be defenses to animal cruelty charges, they are affirmative defenses under which the prosecution has no burden, and the defendant did not provide sufficient evidence of necessity.

The self-defense exception does exist in Maryland law, but it is narrow. It applies when a dog is actively attacking you or another person and lethal force is the only reasonable means of stopping the attack. It does not apply to a dog that is wandering, digging, defecating, or even chasing wildlife on your land.

Important Note: Poisoning a trespassing dog is also a specific crime under Maryland Criminal Law §10-618. Even leaving poison out in a location where a dog could reach it can result in misdemeanor charges. Never use poison as a deterrent.

For a broader look at how other states handle this question, see our articles on neighbor’s dog laws in Texas and neighbor’s dog laws in Georgia.

When to Contact Animal Control in Maryland

Animal control is your primary enforcement tool in Maryland, and knowing when and how to use it effectively matters. Do not wait for a serious incident before making a report.

Contact your county’s animal control office when:

• A neighbor’s dog enters your property without permission, especially if it happens more than once
• The dog is roaming off-leash in public areas or on your street
• The dog has caused damage to your property, plants, or other animals
• The dog has shown threatening behavior — growling, lunging, or chasing — toward you, your family, or your pets
• The dog has bitten anyone, even if the bite seems minor

All animal bites must be reported immediately to the Health Department or local law enforcement authority. The duty to report rests both with the owner of the animal and the person bitten.

An appropriate unit of a county or municipal corporation may determine that a dog is potentially dangerous if it finds that the dog has inflicted a bite on a person while on public or private real property, has killed or inflicted severe injury on a domestic animal when not on its owner’s real property, or has attacked without provocation — and notifies the dog owner in writing of the reasons for this determination.

Once a dog is classified as potentially dangerous, the owner faces strict restraint requirements. A dog owner may not leave a dangerous dog unattended on the owner’s real property unless the dog is confined indoors, in a securely enclosed and locked pen, or in another structure designed to restrain the dog — and may not allow a dangerous dog to leave the owner’s real property unless the dog is leashed and muzzled, or is otherwise securely restrained and muzzled.

For issues involving feral animals or abandoned pets in Maryland, our article on feral cat laws in Maryland covers how the state approaches unowned animals more broadly. You can also compare how animal control operates in neighboring states through our guides on neighbor’s dog laws in North Carolina and neighbor’s dog laws in Ohio.

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

If a neighbor’s dog repeatedly enters your property despite warnings and animal control complaints, building a documented record is what transforms a frustrating situation into an actionable legal case — whether through animal control enforcement, small claims court, or a civil lawsuit.

Start with a written incident log. For every occurrence, record:

• The date and time
• A description of what the dog did (entered yard, dug up garden, approached children, etc.)
• Any damage caused, with estimated or actual dollar values
• Names and contact information of any witnesses
• The animal control or police report number if one was filed

Photographs and video are the most persuasive evidence. A doorbell camera or security camera that captures the dog on your property, with a timestamp, is far more compelling than a written description alone. Reporting attacks or incidents to local animal control in Maryland helps establish an official record. Collecting witness statements, photographs, and medical records supports your claim.

Written communications with your neighbor matter too. Save every text message, email, or letter in which you notified the owner of the problem. This establishes that the owner had knowledge — which is directly relevant to both the dangerous dog classification process and any civil negligence claim.

Pro Tip: Each animal control complaint you file creates a timestamped official record. Multiple complaints against the same owner strengthen the case for a potentially dangerous dog designation, which triggers much stricter containment requirements under Maryland Criminal Law §10-619.

Once you have a solid record, you have several paths forward:

1. Animal control escalation. Present your documented history to animal control and request a formal review for a potentially dangerous dog designation.
2. Small claims court. Maryland’s District Court handles small claims up to $5,000. Documented property damage with photos, receipts, and an incident log gives you a strong foundation.
3. Civil lawsuit. For larger damages or ongoing nuisance, you would be best served by consulting with Maryland counsel experienced in these types of actions, particularly if the case involves personal injury or significant property loss.
4. Mediation. Some Maryland counties offer community mediation services that can resolve neighbor disputes without court involvement — often faster and less costly than litigation.

For additional context on how documentation and legal escalation work in similar states, see our articles on neighbor’s dog laws in New York, neighbor’s dog laws in Florida, and neighbor’s dog laws in Colorado. Maryland residents with questions about other animal-related property issues can also review our guides on backyard chicken laws in Maryland and goat ownership laws in Maryland.

Maryland law gives you real tools to address a neighbor’s dog that won’t stay off your property. The framework — county at-large ordinances, strict liability for damage, the dangerous dog classification process, and civil remedies — works best when you use it systematically. Document thoroughly, report consistently, and escalate through the proper channels. That approach protects your property, your family, and your legal standing without putting you at risk of crossing lines that Maryland law draws firmly around animal welfare.