Delaware Dangerous Dog Law
In Delaware a dog bite that breaks the skin starts a 10-day rabies quarantine10. If an animal welfare officer has reasonable cause to think the dog is dangerous, the officer must also seize it8. Whether the dog is dangerous, potentially dangerous or nondangerous is decided by the Justice of the Peace Court on clear and convincing evidence, not by an agency panel8.
After a bite in Delaware
| Rabies observation | 10 daysDetails below |
|---|---|
| State dangerous-dog law | 16 Del. C. §§ 3071F–3081FDangerous and Potentially Dangerous Dogs (Animal Welfare, subchapter V) |
| Classes of dog | dangerous dog, potentially dangerous dog, nondangerous dog |
| Required insurance for a declared dog | $100,000 minimum |
| Breed-specific laws | Banned: state law bars breed-specific local rules |
| Civil liability for the bite | Strict liability statute |
What happens right after the bite?
Anyone who knows that a person may have been exposed to rabies, including a doctor, hospital or veterinarian, must report it to the Division of Public Health within 12 hours10. The Division asks for every exposure to be reported, even when the dog is vaccinated11. Its Office of Animal Welfare follows up with the person bitten11.
The owner must put the dog in strict quarantine for at least 10 days from the bite. That means confinement by leash, closed cage or paddock, with contact limited to one adult caregiver10. A dog with proof of current rabies vaccination can be quarantined at home. A dog without it goes to a veterinarian, kennel or approved facility at the owner's cost. It stays until a veterinarian vaccinates it after the 10 days1012. During quarantine the dog may not be moved, given away or put down without written permission. If it falls ill, escapes or dies, the owner must phone the state within 12 hours and file a notarized affidavit within 7 days10. A police dog that bites while working and is vaccinated is exempt10.
When is the dog seized?
An animal welfare officer must seize and impound a dog when the officer has reasonable cause to believe it did one of the acts that can make a dog dangerous or potentially dangerous8. The dog stays impounded until the case is decided. If the owner agrees to the proposed conditions, the case can end there. Otherwise the Department of Health and Social Services must file a civil action in the Justice of the Peace Court within 15 business days after impounding the dog and notifying the owner8. The hearing must be held within 30 days of filing. An owner who does not appear gets a default judgment and has 10 days to move to vacate it8.
What makes a dog "dangerous" or "potentially dangerous"?
The court must find the facts by clear and convincing evidence8.
- Potentially dangerous: the dog attacked or physically injured a person, or seriously injured a domestic animal that was on its owner's property or under its owner's control. Repeated conduct also counts: chasing people in an apparent attitude of attack away from the owner's property, unprovoked injuries to domestic animals, or behavior a reasonable person would see as a serious and imminent threat8.
- Dangerous: the dog killed or seriously injured a person, killed or seriously injured a protected domestic animal, or injured a person or domestic animal after being declared potentially dangerous8.
"Serious physical injury" means injury that risks death or causes serious, prolonged disfigurement or loss of a bodily function8. No dog can be declared dangerous or potentially dangerous because of its breed816.
Some bites do not count. The exceptions cover a person committing criminal trespass or another tort on the owner's premises, a person teasing, tormenting, abusing or assaulting the dog, its puppies or its owner, and a person committing a crime. They also cover a dog defending its puppies or a nearby person from an attack, and military, correctional and police dogs on duty8. If the state does not meet its burden, the court declares the dog nondangerous but may still impose reasonable conditions8.
What must the owner do after a finding?
The conditions in the table above apply to dogs declared on or after August 29, 2024, when the General Assembly added licensing, rabies vaccination, microchipping and the 6-foot non-retractable leash rule9. The owner has 30 days to comply, and the court can keep the dog in state custody until then8. Before taking the dog home the owner must repay the costs of its care in custody, or set up a court-approved payment plan, within 10 days. Otherwise ownership passes to the state, which may euthanize the dog8. For dogs declared potentially dangerous before August 29, 2024, the label lapsed after 24 months with no new incident. Later designations do not expire8.
Can the dog be euthanized?
Yes. The court may order euthanasia of a dog it finds dangerous8. The owner or the state may appeal that order to the Court of Common Pleas within 15 days. The appeal is decided on the recorded hearing, stays the order, and the appellant pays for the transcript8.
What if the dog bites again?
If another incident happens during the 30-day compliance period, the state must seize the dog and dispose of it8. A declared dangerous dog that later kills, attacks or injures a person or domestic animal without provocation must be seized and euthanized8. A potentially dangerous dog that repeats the conduct is seized, and the state may ask the court to declare it dangerous8. Breaking the conditions costs $500, then $1,0008.
Can the owner be charged with a crime?
Yes, under 11 Del. C. § 1327, for knowingly or recklessly keeping a dangerous animal that hurts someone13. The charge is a class E felony if a person dies (up to 5 years) and a class F felony for serious physical injury (up to 3 years)1314. Physical injury to a person, or killing or injuring another animal, is a class A misdemeanor carrying up to 1 year and a $2,300 fine1314. A dog need not have been declared dangerous first: a dog with a known, individual propensity for unprovoked attacks counts13. The defenses include a victim committing criminal trespass or a violent felony, and a victim who provoked the attack by cruelty or by injuring the animal13. The owner's civil liability to the person bitten is separate; see Delaware dog bite law and dog bite criminal charges.
Rules for a declared dog in Delaware
| Requirement | Rule |
|---|---|
| Spay or neuter | Required (dangerous and potentially dangerous)§§ 3076F(b)(1), 3077F(c)(1).8 |
| Liability insurance | At least $100,000 (dangerous dog)§ 3076F(b)(2).8 |
| Confinement | Proper enclosure: indoors, or locked pen with secure top and sides§ 3071F(10); fenced yard for a potentially dangerous dog.8 |
| Off the property | Muzzled, non-retractable leash up to 6 ft, held by a responsible adult§§ 3076F(b)(3), 3077F(c)(3).89 |
| Warning sign | Visible from the road or 100 feet, whichever is less§§ 3076F(b)(4), 3077F(c)(4).8 |
| License, rabies shot, microchip | Required for dogs declared on or after Aug. 29, 202484 Del. Laws c. 390.89 |
| Notify the state | Immediately if the dog gets loose, attacks, moves or dies§§ 3076F(b)(5), 3077F(c)(5).8 |
| Transfer | A dangerous dog may be given only to the state, which euthanizes it§ 3076F(c).8 |
Delaware rules in brief
Reporting. Under 3 Del. C. § 8203, any medical practitioner, hospital, veterinarian or other person who knows of a person exposed or suspected of being exposed to rabies must report it to the Division of Public Health within 12 hours by phone, email, fax or in person10. DPH says all bites that break the skin should be reported, whatever the dog's vaccination status, and that medical providers must report11. Delaware Animal Services lists DPH's 24/7 line, 888-295-5156, for bites to people, and the Department of Agriculture for bites to animals12.
Euthanasia. The Justice of the Peace Court may direct euthanasia of a dog it declares dangerous8. A declared dangerous dog that later kills, attacks or injures a person or domestic animal without provocation must be seized and euthanized8. The owner may appeal a euthanasia order to the Court of Common Pleas within 15 days, which stays the order8. Separately, under the rabies law, a dog too dangerous to quarantine safely may be euthanized and tested10.
Criminal penalties. Under 11 Del. C. § 1327, knowingly or recklessly keeping a dangerous animal that kills a person is a class E felony (up to 5 years). Serious physical injury is a class F felony (up to 3 years), and physical injury is a class A misdemeanor1314. "Dangerous animal" includes a dog declared dangerous or potentially dangerous and one with an individualized, known propensity for unprovoked attacks13. Letting a dog at large bite without provocation carries a $500 civil penalty, $1,000 for a repeat1.
Breed rules. Since 2017, 22 Del. C. § 116 bars municipal laws based on a dog's breed or perceived breed, and no dog may be declared dangerous or potentially dangerous because of breed alone1516.
Compare states: dangerous dog laws by state, bite quarantine rules, euthanasia after a bite. If your dog bit someone, start with what happens next.
Sources
- 16 Del. C. ch. 30F, subch. IV (§§ 3041F–3059F), General Provisions Concerning Dogs, Delaware General Assembly, Delaware Code Online. Checked 17 October 2026.
- Riad v. Brandywine Valley SPCA, Inc., No. 249, 2023 (Del. June 10, 2024), Supreme Court of Delaware. Checked 17 October 2026.
- Russo v. Zeigler, 67 A.3d 536 (Del. Super. Ct. 2013), Superior Court of Delaware (via CourtListener). Checked 17 October 2026.
- 10 Del. C. ch. 81, Personal Actions (§§ 8107, 8116, 8119, 8124, 8132), Delaware General Assembly, Delaware Code Online. Checked 17 October 2026.
- Tilden v. Anstreicher, 367 A.2d 632 (Del. 1976), Supreme Court of Delaware (via CourtListener). Checked 17 October 2026.
- Billings v. Abbey Walk Apartments, LLC, C.A. No. N23C-04-129 DJB (Del. Super. Ct. Oct. 30, 2023), Superior Court of Delaware (via CourtListener). Checked 17 October 2026.
- Jardel Co. v. Hughes, 523 A.2d 518 (Del. 1987), Supreme Court of Delaware (via CourtListener). Checked 17 October 2026.
- 16 Del. C. ch. 30F, subch. V (§§ 3071F–3081F), Dangerous and Potentially Dangerous Dogs, Delaware General Assembly, Delaware Code Online. Checked 17 October 2026.
- 84 Del. Laws c. 390 (Senate Substitute 1 for SB 269), approved Aug. 29, 2024, Delaware General Assembly. Checked 17 October 2026.
- 3 Del. C. ch. 82, subch. I, Rabies Control (§§ 8202, 8203, 8207, 8208), Delaware General Assembly, Delaware Code Online. Checked 17 October 2026.
- Rabies, Delaware Division of Public Health. Checked 17 October 2026.
- Rabies Exposure, Delaware Animal Services, Office of Animal Welfare. Checked 17 October 2026.
- 11 Del. C. § 1327, Maintaining a dangerous animal, Delaware General Assembly, Delaware Code Online. Checked 17 October 2026.
- 11 Del. C. §§ 4205–4206, Sentences for felonies and misdemeanors, Delaware General Assembly, Delaware Code Online. Checked 17 October 2026.
- 81 Del. Laws c. 31 (House Bill 13), approved June 2, 2017, Delaware General Assembly. Checked 17 October 2026.
- 22 Del. C. § 116, Dogs, Delaware General Assembly, Delaware Code Online. Checked 17 October 2026.