Maryland Dog Laws: Licensing, Bite Liability, and Tethering

Maryland’s dog laws sit in three places: a state licensing rule tied to rabies vaccination, county ordinances that set leash and fine schedules, and state statutes that govern tethering, bite liability, and dangerous dog classifications. Owners face strict liability when an unleashed dog causes injury, a rebuttable presumption of knowledge in most other bite cases, and misdemeanor exposure for tethering and dangerous dog violations. The specifics matter, because a $100 licensing fine and a $2,500 dangerous dog conviction both start with routine ownership decisions.

Licensing and Rabies Vaccination

Every dog in Maryland four months or older must be licensed, and the license is inseparable from the rabies vaccination. Maryland Local Government Code §13-126 ties the license’s expiration to the expiration date on the rabies certificate, so you cannot hold one without the other. To register a dog, you bring the veterinarian’s current rabies certificate to your county’s animal services office or use the county’s online portal where one exists.

Fees are set locally and depend heavily on whether the dog is spayed or neutered. Counties price unaltered dogs higher on purpose, to encourage sterilization.

Montgomery County charges $12 per year for an altered dog and $25 for an unaltered dog. Multi-year licenses are available at reduced rates.¹
Baltimore County charges $7 for an altered dog and $17 for an unaltered dog for owners under 60, with reduced rates for owners over 60. Renewals run May 1 through July 31, and missing that window triggers penalty fees that roughly double the cost.²
Baltimore City charges $10 for an altered dog and $30 for an unaltered dog, with senior rates of $5 and $15. A $100 lifetime license is available if the pet is sterilized, vaccinated, and microchipped.³

Rockville and Gaithersburg license pets through the municipality rather than Montgomery County, so residents there register locally. Beyond the legal requirement, the license tag is the fastest way animal control can identify a loose dog and reach the owner. Without one, the dog is more likely to end up in a shelter, and the owner is more likely to pay a fine on top of that.⁴

Leash Rules and At-Large Violations

Maryland has no single statewide leash law. Each county and municipality writes its own, and the fine for an off-leash dog varies substantially by jurisdiction.

Montgomery County defines a dog as “at large” whenever it is off the owner’s premises and not leashed. Exceptions cover service dogs, dogs in designated off-leash exercise areas run by the Maryland-National Capital Park and Planning Commission, and dogs in approved activities such as obedience training. The common areas of a homeowner’s association, condominium, or cooperative do not count as the owner’s premises, so a leash is still required in those shared spaces. A first at-large violation is $100, and each subsequent offense is $500. Bringing a dog onto public school grounds during school hours, or into a public recreation area during organized activities, without a leash carries a separate $500 fine.⁵

Baltimore County requires all dogs and cats to be leashed off the owner’s property and prohibits chain collars outside of training. An unlicensed pet costs $100, and leash violations carry separate penalties.⁶

Tethering Rules Under State Law

Unlike leash rules, tethering is governed at the state level under Maryland Criminal Law §10-623, and the standard is stricter than many owners assume. A tethered dog must have access to suitable shelter: a ventilated structure with a solid floor, a weatherproof roof, and an enclosure that keeps the dog reasonably dry and at a normal body temperature. The dog must also have shade that fully covers it from direct sun.

Tethering is prohibited during extreme weather, defined as temperatures below 32°F or any period when the National Weather Service has an active winter or cold weather warning in effect.⁷ A violation is a misdemeanor punishable by up to 90 days in jail, a fine up to $1,000, or both.⁸

Bite Liability

Maryland Courts and Judicial Proceedings §3-1901 sets out two overlapping liability rules that depend on where and how the bite happens.

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. The owner cannot escape liability by claiming ignorance of the dog’s temperament. Only three defenses are available: the injured person was trespassing or committing a crime on the owner’s property, was committing a criminal offense against another person, or was teasing, tormenting, or provoking the dog.⁹

Outside the running-at-large context, §3-1901(a) creates a rebuttable presumption. Once a plaintiff proves the dog caused the injury, the law presumes the owner knew or should have known the dog had dangerous tendencies. The owner can try to rebut that presumption, but in a jury trial, the judge cannot rule as a matter of law that it has been rebutted before the jury returns its verdict. That procedural rule tilts the fact-finding toward bite victims.⁹

Breed Neutrality

Maryland’s current statute is breed-neutral. It replaced a 2012 Court of Appeals decision, Tracey v. Solesky, that had made pit bull owners and their landlords strictly liable regardless of the individual dog’s history. The General Assembly passed Senate Bill 286 in 2014 to overturn Solesky and to state expressly that liability applies regardless of the dog’s breed or heritage.¹⁰ Some counties still have breed-specific regulations of their own, so local ordinances are worth checking.

Landlords and Other Non-Owners

For anyone other than the dog’s owner, including landlords, property managers, and dog sitters, the common law that existed before April 1, 2012 still applies. A non-owner is generally liable only if they knew or had reason to know about the dog’s dangerous tendencies.⁹

Dangerous and Potentially Dangerous Dogs

Maryland Criminal Law §10-619 sets a two-tier classification enforced by local animal control units. The categories carry different requirements and different penalties.

A dog is potentially dangerous if a county or municipal unit finds that the dog has bitten a person on public or private property, killed or severely injured a domestic animal while off the owner’s property, or attacked without provocation. The owner must receive written notice of the determination.¹¹

A dog becomes dangerous in one of two ways. First, a dog that without provocation kills or inflicts severe injury on a person is immediately dangerous. “Severe injury” means broken bones or disfiguring lacerations that require multiple sutures or cosmetic surgery. Second, a dog already classified as potentially dangerous becomes dangerous if it subsequently bites a person, kills or severely injures a domestic animal off the owner’s property, or attacks without provocation.¹¹

The owner of a dangerous dog must confine it indoors or in a securely enclosed and locked pen when it is unattended on the property. Off the property, the dog must be both leashed and muzzled. Selling or giving away a dangerous or potentially dangerous dog requires two written notifications: to the authority that made the classification and to the new owner, disclosing the dog’s history. Violating any of these obligations is a misdemeanor punishable by a fine up to $2,500. Dogs owned by and working for government or law enforcement units are exempt from the statute.¹¹

Defenses Available to Owners

When a dog is running at large, §3-1901 gives the owner three specific defenses: the injured person was committing or attempting a trespass or crime on the owner’s property, was committing or attempting a criminal offense against any person, or was provoking the dog through teasing, tormenting, or abuse.⁹

Provocation is the defense owners raise most often and the one that fails most often. A child reaching toward a dog, or a delivery person entering an open gate, does not typically qualify. Courts generally look for deliberate physical aggression or sustained harassment before accepting the argument.

Section 3-1901(d) also preserves the other common law and statutory defenses. Comparative negligence, assumption of risk, and similar defenses remain available depending on the facts. If a bite happens on the owner’s property with the dog leashed, the running-at-large strict liability rule does not apply, and the case turns on the rebuttable presumption or common law standards.

Service and Assistance Animals

Federal law creates two separate frameworks that override many of Maryland’s local pet restrictions, and the two are often confused.

Service Dogs Under the ADA

Under the Americans with Disabilities Act, a service animal is a dog individually trained to perform specific tasks for a person with a disability, such as guiding a person who is blind, alerting a person who is deaf, pulling a wheelchair, or calming a person with PTSD during an anxiety attack. Dogs whose only function is providing emotional comfort do not qualify as service animals under the ADA.¹²

Businesses and government facilities can ask only two questions when it is not obvious a dog is a service animal: whether the dog is required because of a disability, and what task the dog has been trained to perform. They cannot demand documentation, require a demonstration, or ask about the person’s disability.¹³ A business can ask that a service dog be removed only if the animal is out of control and the handler is not taking effective action, or if the animal is not housebroken. Even then, the person with the disability must be offered the chance to use the business’s services without the animal.¹⁴

Assistance Animals in Housing

The Fair Housing Act covers a broader category. An assistance animal includes any animal that provides disability-related support, including emotional support animals that would not qualify under the ADA. Housing providers must allow reasonable accommodations for assistance animals even when the property has a no-pets policy, and they cannot charge pet deposits or fees for these animals. When the disability and need are not apparent, a landlord can request documentation from a healthcare provider confirming the disability-related need, but cannot demand extensive medical records or details about the diagnosis. A housing provider can deny an assistance animal request only in narrow circumstances: an undue financial burden, a fundamental alteration of the housing provider’s operations, or a direct threat from the specific animal that no other accommodation can address.¹⁵

Local fine schedules change, and county animal services offices publish the most current amounts. Before adopting a dog, moving to a new county, or responding to an animal control complaint, checking the local ordinance against the state statutes above is the shortest path to knowing where you stand.

1
Montgomery County, Maryland. Pet Licensing Fee Schedule
2
Baltimore County Government. Apply for or Renew an Animal License
3
Maryland Department of Agriculture. License Information
4
Montgomery County, MD. Pet Licensing, Office of Animal Services
5
Montgomery County Government. Animal Control and Anti-Cruelty Laws, Office of Animal Services
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Baltimore County Government. Report Violations of Animal Laws
7
Maryland General Assembly. Maryland Criminal Law 10-623
8
Justia Law. Maryland Criminal Law 10-623 – Leaving Dogs Outside and Unattended by Use of Restraints
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Maryland General Assembly. Maryland Code Courts and Judicial Proceedings 3-1901
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Maryland General Assembly. Fiscal and Policy Note for Senate Bill 286
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Maryland Department of Agriculture. Maryland Criminal Code 10-619
12
ADA.gov. ADA Requirements: Service Animals
13
U.S. Department of Justice ADA.gov. Frequently Asked Questions about Service Animals and the ADA
14
eCFR. 28 CFR 35.136 – Service Animals
15
U.S. Department of Housing and Urban Development (HUD). Assistance Animals