Does Maryland Follow the One Bite Rule? What Dog Bite Victims Need to Know
July 10, 2026
If you were bitten or attacked by a dog in Maryland, one of the first questions you may ask is whether the owner can simply claim their dog “never bit anyone before.” Under the old common law one bite rule, that defense could have shielded an owner from liability. Maryland, however, moved away from that framework over a decade ago.
Understanding exactly how Maryland’s dog bite law works — and where the one bite rule still fits in — can make a significant difference in whether you recover compensation for your injuries. This article walks you through the current legal landscape, what you need to prove, and the steps you should take after an attack.
Important Note: This article is for general informational purposes only and does not constitute legal advice. If you have been bitten or injured by a dog in Maryland, consult a licensed Maryland attorney to evaluate your specific situation.
Does Maryland Follow the One Bite Rule?
Maryland does not follow the traditional one bite rule. Instead, the state imposes strict liability on dog owners even if it is the first time the dog has bitten someone. That is a meaningful distinction for anyone hurt in a dog attack, because it removes one of the most common obstacles victims face in other states.
Maryland is no longer a traditional one bite state for incidents occurring after April 8, 2014. The current statute creates a rebuttable presumption that the dog owner knew or should have known the dog had dangerous propensities, which means the burden shifts to the owner rather than the victim.
Prior to 2014, Maryland applied the one bite rule and negligence principles. Maryland’s dog bite law underwent a significant transformation on April 8, 2014, when the General Assembly enacted Md. Code, Courts and Judicial Proceedings § 3-1901. The new statute replaced the older one bite rule with a system that strongly favors injured victims while still allowing responsible owners narrow opportunities to defend themselves.
To understand the full picture — including the situations where the one bite rule’s logic still surfaces — it helps to look at how the current law actually operates. You can also review our overview of what happens if a dog bites someone in Maryland for a broader look at the process.
How the One Bite Rule Works in Maryland
Despite the name, the one bite rule doesn’t have much to do with whether the dog has bitten anyone. Instead, it means that a person is liable for an injury caused by a dog if they had a legal duty to protect people from the dog, they knew the dog had a vicious or dangerous propensity, and the victim’s injuries were caused by the dog’s vicious or dangerous behavior.
Maryland’s statute creates three distinct liability frameworks depending on the circumstances. The first is owner liability with a rebuttable presumption. When a dog owner is sued for personal injury or death caused by their dog, evidence that the dog caused the harm creates a rebuttable presumption that the owner knew or should have known about the dog’s dangerous tendencies.
The law covers all injuries caused by dogs, not just bites. A dog that knocks down a pedestrian, scratches a child while jumping, or causes someone to fall while trying to flee triggers the same liability rules as a traditional bite case.
A separate strict liability rule applies when the dog was running at large at the time of the attack. Owners of dogs that escape leash control bear automatic responsibility for resulting injuries regardless of whether they could have anticipated the dog would harm someone.
The one bite rule framework still matters in one specific scenario: in cases not involving at-large dogs, Maryland applies the so-called one bite rule when a victim files a claim. However, Maryland does not give an owner a free pass for a prior bite as in one bite law states. For a comparison of how other states handle this doctrine, see our articles on the one bite rule in New York and the one bite rule in Florida.
What Victims Must Prove Under the One Bite Rule in Maryland
Because Maryland’s statute creates a rebuttable presumption of owner knowledge, your burden as a victim is considerably lighter than in a traditional one bite state. Unlike traditional one bite states where victims must prove the owner knew their dog was dangerous, Maryland creates a rebuttable presumption of owner knowledge. If a dog causes personal injury or death, the law presumes the owner knew or should have known that the dog had vicious or dangerous propensities. The burden then shifts to the owner to prove otherwise. This approach gives victims a significant legal advantage — you do not need to show that the dog bit someone before or that the owner received prior warnings about the dog’s behavior. The injury itself triggers the presumption of liability.
Under a negligence theory, the requirements are different. Proving negligence can be more challenging than strict liability because the victim must show that the owner’s failure to act responsibly directly led to the dog bite. This might involve demonstrating that the owner did not properly train or restrain the dog, ignored warning signs of the dog’s aggressive behavior, or failed to follow local leash laws.
Victims who succeed in proving negligence may be entitled to recover damages for medical expenses, lost wages, pain and suffering, and other losses resulting from the dog bite.
Key Insight: Under Maryland’s strict liability statute, the fact that the dog caused harm is enough to trigger the presumption. The owner must then disprove knowledge of dangerous tendencies — not the other way around.
What Counts as Prior Knowledge in Maryland
Even though Maryland’s statute shifts the burden to the owner, understanding what constitutes prior knowledge remains relevant — particularly in negligence claims and in cases where an owner attempts to rebut the presumption.
Maryland’s dog-injury law creates a rebuttable presumption that, if a dog kills or injures someone, the owner knew in advance about their pet’s vicious or dangerous propensity. Owners are therefore strictly liable for the victim’s damages unless they can prove either that their dog didn’t have vicious or dangerous tendencies, or that there was no way they could have known about the dog’s vicious or dangerous tendencies.
Prior knowledge can take many forms beyond an actual previous bite. Courts have looked at evidence such as:
- Animal control records documenting prior complaints about the dog
- Neighbor or witness statements about aggressive behavior, such as growling, lunging, or snapping
- Warnings the owner received from others about the dog’s temperament
- The owner’s own statements or social media posts describing the dog as aggressive
- Prior incidents where the dog chased, jumped on, or threatened people without biting
Once owners know that their dog is a vicious breed, they should assume that it would bite. Also, if the dog already acts viciously in certain circumstances or is prone to biting, the owner should assume that it is dangerous. This means knowledge doesn’t require an actual prior bite — a pattern of threatening behavior can be enough.
Maryland also has a dangerous dog law. A dog can be classified as dangerous if, without provocation, it kills or inflicts severe injury on a person. A dog can also be classified as dangerous after two incidents in which it engages in certain behaviors. After the first incident, animal control can classify the dog as potentially dangerous. Once it has this classification, animal control can classify the dog as dangerous if there is another incident.
Exceptions and Defenses to the One Bite Rule in Maryland
Maryland’s strict liability framework does not mean every dog bite automatically results in a successful claim. Owners have recognized defenses available to them, and certain victim conduct can eliminate recovery entirely.
While the statute imposes strict liability on dog owners, there are certain exceptions where the owner may not be held responsible. These include situations where the victim was trespassing or engaged in criminal activity on the owner’s property at the time of the incident, where the victim was provoking, teasing, or tormenting the dog, or where the victim was breaking the law or attempting to commit a criminal offense against the owner or another person.
Maryland’s contributory negligence rule is perhaps the most consequential defense available to dog owners. The state adheres to the harsh, ancient doctrine of contributory negligence, which does not permit a victim to recover if his own actions contributed even just one percent to the cause of the accident. This is far stricter than the comparative fault systems used in most other states.
In Maryland, a plaintiff who shares any blame for their own injuries cannot recover any damages from the defendant. Practically speaking, this means that if you provoked the dog, ignored a “Beware of Dog” sign, or trespassed on private property, your entire claim could be defeated — even if the dog’s attack was severe.
In the event of a dog bite, a victim who was invited onto the property by the owner but intentionally provoked the animal or entered a restricted area may be unable to file a compensation claim.
For context on how other states handle similar defenses, see our guides on the one bite rule in Illinois and the one bite rule in North Carolina.
Dog Owner Liability Beyond the One Bite Rule in Maryland
Maryland’s liability framework extends well beyond the one bite rule’s traditional scope. Section 3-1901 of the Maryland Code is not a one bite rule. Instead, it is a strict liability law. This means that the law holds owners responsible whether or not they knew that the dog would be dangerous in any situation. They cannot get off paying damages even if they took reasonable care to ensure that the dog did not cause harm to the victim.
These statutes are not limited to dog bites. They also include any action that could cause harm to other people. So, for example, if someone’s unleashed dog knocks someone into the path of an oncoming vehicle, these laws also cover that.
Landlords and property owners can also face exposure in certain circumstances. The law recognizes that property owners have the right to protect their homes and families, and this includes the right to have dogs on their property. However, dog owners still need to take reasonable precautions to prevent their dogs from injuring people who are legally on their property, such as delivery workers or guests.
An owner of a dangerous dog must keep the dog securely enclosed on his or her property or must muzzle and restrain the dog. A person who violates this section is guilty of a misdemeanor and on conviction is subject to a fine not exceeding $2,500.
| Liability Theory | When It Applies | Victim’s Burden |
|---|---|---|
| Strict Liability (dog at large) | Dog was off-leash or unconfined | Prove the dog caused the injury; no knowledge requirement |
| Statutory Presumption (§ 3-1901) | Any dog bite or attack by an owner’s dog | Prove the injury occurred; owner must rebut presumption of knowledge |
| Negligence | Owner failed to exercise reasonable care | Prove owner’s failure caused the injury |
| Common Law One Bite Rule | Claims against non-owners (e.g., keepers, landlords) | Prove defendant knew of the dog’s dangerous propensity |
For a look at how states with a purer version of the one bite rule compare, our articles on the one bite rule in Tennessee and the one bite rule in Arizona are useful reference points. You may also find value in reviewing the one bite rule in Michigan and the one bite rule in Washington.
What to Do After a Dog Bite in Maryland
What you do in the hours and days after a dog attack directly affects both your health and your legal options. Acting quickly and methodically preserves evidence and protects your ability to file a claim.
- Seek medical attention immediately. Even bites that look minor can cause infection, nerve damage, or scarring. A medical record from the day of the attack is also foundational evidence for any future claim.
- Identify the dog and its owner. Gather information, including the dog owner’s name, address, phone number, and homeowner’s or renter’s insurance information.
- Document the scene and your injuries. Document everything. Photograph your injuries — including follow-up photos as they heal — the location where the bite occurred, and the dog if possible.
- Collect witness information. Identify witnesses and collect names and contact information from anyone who saw the attack.
- Preserve physical evidence. Keep torn or bloody clothing and any other items damaged in the attack.
- Report the bite to animal control. It is important to report the dog bite to local authorities. In many areas of Maryland, there are specific agencies responsible for handling dog bite cases, such as animal control or the local health department. Filing a report can help ensure that the dog is properly quarantined and that any necessary action is taken to prevent future attacks.
- Request the dog’s history. Check the dog’s history by requesting records from animal control about any prior complaints or incidents involving the dog.
- Consult an attorney promptly. Consulting with an experienced attorney as soon as possible after the dog bite can help ensure that your case is filed on time and that all necessary evidence is preserved.
Pro Tip: Do not give a recorded statement to the dog owner’s insurance company before speaking with an attorney. Insurers may use your words to argue you provoked the dog or contributed to the incident, which under Maryland’s contributory negligence rule could bar your entire recovery.
One deadline you cannot afford to miss is the statute of limitations. Each state has its own deadlines for filing civil lawsuits, called statutes of limitation. In Maryland, you generally have three years from the date of the injury to file a lawsuit over a dog bite or other injury. If you wish to pursue legal action, you must file your claim within this time frame. Failing to do so could result in your case being dismissed, and you would lose your right to recover compensation.
Maryland’s strict liability law means you have a stronger legal position than victims in many other states, but the contributory negligence rule makes it equally important to build a clean, well-documented case. For additional context on how the one bite rule plays out across state lines, explore our guides on the one bite rule in Minnesota, the one bite rule in Colorado, and the one bite rule in New Jersey. If you have concerns about other animal encounters in Maryland, you may also find our resources on spiders in Maryland and types of ants that bite helpful.