Wisconsin Dangerous Dog Law
When a dog bites someone in Wisconsin, an officer must order it quarantined for at least 10 days, at home if it is vaccinated15. The state has no dangerous-dog registry: a court can order a dog killed after two serious unprovoked injuries off the owner's property, and cities such as Milwaukee run their own dangerous-animal process1,17.
After a bite in Wisconsin
| Rabies observation | 10 daysDetails below |
|---|---|
| State dangerous-dog law | None: cities and counties set the rules |
| Required insurance for a declared dog | No statewide minimum |
| Breed-specific laws | Allowed: cities and counties may adopt them |
| Civil liability for the bite | Strict liability statute |
What happens right after the bite?
The Department of Health Services asks bite victims to call the local health department, or the police outside office hours, and not to let anyone release or destroy the dog until a health official or animal control officer has been consulted16. Once a peace officer, local health officer or humane officer has reason to believe a dog bit a person, the officer must order it quarantined15. The officer may kill the dog only if it cannot be captured, as a last resort, or if the owner agrees15.
Home or shelter?
If the dog has a valid rabies vaccination certificate, the officer may let you keep it at home. Otherwise it goes to an isolation facility within 24 hours of the order15. Either way it stays in strict isolation for at least 10 days under a veterinarian's supervision, with exams on the first day, the last day and one day in between15. If the vet certifies no signs of rabies, the dog is released. If it shows signs, it is killed and its head is tested by the State Laboratory of Hygiene15. You pay the isolation, veterinary and laboratory costs15. Counties and cities may run stricter rabies programs15.
A vaccinated police dog that bites while working is exempt from quarantine, but the agency must make it available for examination15.
What if I refuse?
Refusing to deliver the dog or breaking quarantine conditions is punishable by a fine of $100 to $1,000, up to 60 days in jail, or both, and the officer may then kill the dog15. Failing to vaccinate a dog at all carries a separate $50 to $100 forfeiture15.
Is there a state dangerous-dog list?
No. Chapter 174 has no "dangerous dog" or "vicious dog" designation, registry, insurance rule or enclosure standard2. The state tools are money penalties and a court order to kill the dog. Everything else comes from your county, city, village or town.
State forfeitures
If your dog injures a person, a domestic animal or property, you face a forfeiture of $50 to $2,500. If you already knew the dog had injured a person, animal or property before, the range rises to $200 to $5,0001. These come on top of civil liability for the victim's damages1. They are forfeitures, not criminal fines, and chapter 174 creates no jail term for a bite2.
When can a court order a dog killed?
Under § 174.02(3), the state, a municipality, the person injured, a parent of an injured child, or the owner of an injured domestic animal can file a civil action asking a court to order an officer to kill the dog1. The court may grant it only if it finds both:
- the dog caused serious injury to a person or domestic animal on two separate occasions, off the owner's property, without reasonable cause; and
- the owner was notified or knew, before the second injury, that the dog caused the first1.
One bite, or a bite on your own property, is not enough under the state statute. The officer must kill the dog in a proper and humane manner1. The order does not apply to a police dog that injures a crime suspect while working1. Because this is a court case, you can contest the facts at a hearing.
How local dangerous-animal rules work
Most designations happen under local ordinances, and the rules differ from town to town. Milwaukee is an example. Under § 78-25 of its code, an animal is a "prohibited dangerous animal" if, without provocation, it inflicts substantial bodily harm on a person or kills a pet off its owner's property; if it was declared dangerous or banished elsewhere in Wisconsin; or if it is subject to a § 174.02(3) order17. The owner then gets an order to remove the animal from the city within 7 days or have it destroyed, and may appeal in writing to the Department of Neighborhood Services within 72 hours17. Check your own municipality's code and any deadline on the notice you receive.
Are any breeds banned?
No state law bans breeds or stops local governments from doing so. Some villages regulate particular breeds. Colfax's 2015 ordinance, for example, lists pit bull types, the Presa Canario, Rottweiler, Rhodesian Ridgeback and Tosa Inu and requires a short leash and other conditions18.
What if my dog bites again?
A second bite raises the stakes in three ways. The forfeiture range rises to $200 to $5,0001. A second serious injury off your property opens the door to a court order to kill the dog1. And if the earlier bite broke the skin and left permanent scarring, a new bite of that kind makes you liable for double the victim's damages1. See what to do if your dog bit someone and Wisconsin dog bite law for the civil side.
Rules for a declared dog in Wisconsin
| Requirement | Rule |
|---|---|
| Rabies quarantine | At least 10 days; at home only if vaccinatedWis. Stat. § 95.21(5).15 |
| Quarantine costs | Paid by the ownerWis. Stat. § 95.21(8).15 |
| Forfeiture, first injury | $50 to $2,500Wis. Stat. § 174.02(2)(a).1 |
| Forfeiture after notice | $200 to $5,000Wis. Stat. § 174.02(2)(b).1 |
| State liability insurance | None requiredWis. Stat. ch. 174.2 |
| Milwaukee dangerous-animal order | Remove from the city within 7 days or destroy; 72 hours to appealMilwaukee Code § 78-25.17 |
Wisconsin rules in brief
Reporting. The Wisconsin Department of Health Services asks bite victims to notify their local health department, or local law enforcement when public health staff are unavailable, whenever a bite occurs, and to tell their physician; the biting animal should not be released or destroyed until a public health official or animal control officer is consulted16. Once an officer has reason to believe a dog or cat bit a person, state law requires a quarantine order15.
Euthanasia. A court may order a dog killed if it caused serious injury to a person or domestic animal on two separate occasions off the owner's property without reasonable cause, and the owner knew of the first injury before the second1. The state, a municipality, the injured person, a parent of an injured child or the owner of an injured animal can bring the action1. An officer may also kill a biting dog that cannot be captured for quarantine, or whose owner breaks the quarantine order15.
Criminal penalties. Chapter 174 sets civil forfeitures, not crimes: $50 to $2,500 when a dog injures a person, rising to $200 to $5,000 if the owner knew of an earlier injury1,2. Refusing a rabies quarantine order is a crime punishable by up to 60 days in jail15. No Wisconsin statute creates a specific crime for a dog attack.
Breed rules. No Wisconsin statute bars breed-specific local laws, and some villages regulate listed breeds, such as Colfax's 2015 ordinance on pit bull types, Rottweilers and others18.
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
- Wisconsin Statutes § 174.02, Owner's liability for damage caused by dog; penalties; court order to kill, Wisconsin State Legislature. Checked 17 October 2026.
- Wisconsin Statutes chapter 174, Dogs (incl. § 174.001 definitions, history and annotations), Wisconsin Legislative Reference Bureau. Checked 17 October 2026.
- Wisconsin Statutes § 893.54, Injury to the person, Wisconsin State Legislature. Checked 17 October 2026.
- Wisconsin Statutes § 893.16, Person under disability, Wisconsin State Legislature. Checked 17 October 2026.
- Wisconsin Statutes § 895.045, Contributory negligence, Wisconsin State Legislature. Checked 17 October 2026.
- Augsburger v. Homestead Mutual Insurance Co., 2014 WI 133, 359 Wis. 2d 385, 856 N.W.2d 874, Wisconsin Supreme Court (via CourtListener). Checked 17 October 2026.
- Pawlowski v. American Family Mutual Insurance Co., 2009 WI 105, 322 Wis. 2d 21, 777 N.W.2d 67, Wisconsin Supreme Court (via CourtListener). Checked 17 October 2026.
- Fandrey v. American Family Mutual Insurance Co., 2004 WI 62, 272 Wis. 2d 46, 680 N.W.2d 345, Wisconsin Supreme Court (via CourtListener). Checked 17 October 2026.
- Armstrong v. Milwaukee Mutual Insurance Co., 202 Wis. 2d 258, 549 N.W.2d 723 (1996), Wisconsin Supreme Court (via CourtListener). Checked 17 October 2026.
- Sprague v. Sprague, 132 Wis. 2d 68, 389 N.W.2d 823 (Ct. App. 1986), Wisconsin Court of Appeals (via CourtListener). Checked 17 October 2026.
- Malone v. Fons, 217 Wis. 2d 746, 580 N.W.2d 697 (Ct. App. 1998), Wisconsin Court of Appeals (via CourtListener). Checked 17 October 2026.
- Wisconsin Statutes § 893.80, Claims against governmental bodies or officers, Wisconsin State Legislature. Checked 17 October 2026.
- Wisconsin Statutes § 895.043, Punitive damages, Wisconsin State Legislature. Checked 17 October 2026.
- Wisconsin Statutes § 895.57, Damage, release or theft of animals, Wisconsin State Legislature. Checked 17 October 2026.
- Wisconsin Statutes § 95.21, Rabies control program, Wisconsin State Legislature. Checked 17 October 2026.
- Rabies, Wisconsin Department of Health Services. Checked 17 October 2026.
- Prohibited Animals, City of Milwaukee Department of Neighborhood Services. Checked 17 October 2026.
- Ordinance 2015-03, Sec. 7-1-9 Pit Bulls and Other Dangerous Animals, Village of Colfax, Wisconsin. Checked 17 October 2026.
- Wisconsin Statutes § 893.52, Action for damages for injury to property, Wisconsin State Legislature. Checked 17 October 2026.
- Wisconsin Statutes § 174.01, Restraining action against dogs, Wisconsin State Legislature. Checked 17 October 2026.