Chicago Dog Bite Reporting Requirements

A dog bite in Chicago can happen anywhere, from a walk along the Lakefront Trail to a visit with a neighbor in Wicker Park or a delivery stop in Lincoln Park. When it does, Illinois law sets clear rules about what must happen next, and those rules carry real consequences for dog owners who ignore them. Understanding Chicago’s dog bite reporting requirements protects your health, creates a legal record, and puts you in a stronger position if you need to pursue a claim.

Table of Contents

• Who Is Required to Report a Dog Bite in Chicago?
• The 10-Day Quarantine Requirement Under Illinois Law
• Chicago Municipal Code Rules and Owner Penalties
• How Reporting Affects Your Personal Injury Claim
• What Happens If the Dog Owner Fails to Comply?
• FAQs About Chicago Dog Bite Reporting Requirements

Who Is Required to Report a Dog Bite in Chicago?

Reporting a dog bite in Chicago is not optional for most people involved. The Illinois Animal Control Act requires that all dog bites be reported to local animal control authorities, and that requirement applies not only to victims but also to any medical professionals who treat bite wounds. Under the Illinois Animal Control Act, Section 510 ILCS 5/13(a-15), any person with knowledge that someone has been bitten by an animal must notify the local animal control administrator within 24 hours. That includes bystanders, family members, and anyone else who witnessed the attack.

According to Section 18 of the Animal Control Act, “Any physician or other medical personnel who provides treatment for a dog bite shall report the incident to the administrator of the local animal control program within 24 hours” under 510 ILCS 5/18. So if you go to an emergency room at Northwestern Memorial or Rush University Medical Center after a bite, the hospital staff are legally obligated to file that report themselves.

Chicago Animal Care and Control (CACC) handles follow-up investigations to animal bites that happen within the city. The first step when a bite happens is to make a report by calling 311 Non-Emergency or stopping into your police district to make a report. The information collected goes to Cook County Animal and Rabies Control as well as CACC. If you were bitten near Millennium Park or on a sidewalk in Pilsen, that 311 call starts the entire official process. Do not skip it, even if the injury seems minor at first.

Dog owners also carry their own duty. Under 510 ILCS 5/13(a-20), it is unlawful for a dog owner to conceal the animal’s whereabouts, euthanize, sell, or otherwise dispose of a dog known to have bitten someone before it has been examined and released by a licensed veterinarian or the animal control administrator. Violating this provision is a Class A misdemeanor for a first offense and a Class 4 felony for a second or subsequent violation. These are criminal penalties on top of any civil liability the owner already faces.

The 10-Day Quarantine Requirement Under Illinois Law

Once a bite is reported, Illinois law triggers an automatic quarantine process. Under 510 ILCS 5/13, if a dog bites someone, the incident must be reported to the local administrator, and the dog must be confined for observation, usually 10 days. This quarantine exists primarily to monitor the animal for signs of rabies, which can be fatal if left untreated in a bite victim.

Under 510 ILCS 5/13(a-5), the dog owner, or an agent or caretaker if the owner is unavailable, must present the animal to a licensed veterinarian within 24 hours of the bite. A veterinarian presented with an animal documented to have bitten a person must make a record of the clinical condition of the animal immediately. At the end of the confinement period, the animal must be examined by a licensed veterinarian, inoculated against rabies if eligible, and microchipped, if the dog or cat has not been already, at the expense of the owner.

If the dog was already vaccinated against rabies at the time of the bite, the animal control administrator may allow home confinement rather than a facility stay, provided the confinement prevents the dog from biting anyone else during the observation period. Bites to humans and companion animals must be reported to local police or to the Cook County Sheriff’s Office for unincorporated areas, and a Cook County Bite Report will be completed by the law enforcement agency and forwarded to the Department. All expenses related to the quarantine, including veterinary exams and boarding costs, fall on the dog owner, not the victim.

The administrator is also required to notify the person who was bitten about the animal’s clinical condition. If confirmed rabies is found, the attending physician or responsible health agency must be alerted immediately. This notification process matters greatly for bite victims, because rabies treatment must begin quickly to be effective. Do not assume the dog is healthy just because the owner says so.

Chicago Municipal Code Rules and Owner Penalties

In addition to state law, Chicago enforces its own Animal Care and Control ordinances found in the Municipal Code of Chicago, Chapter 7-12. These local rules go beyond what Illinois state law requires and create additional obligations for dog owners within city limits. If you were bitten in Lakeview, Hyde Park, or anywhere else inside Chicago’s city boundaries, both sets of rules apply to your situation.

In addition to Illinois state law, the city of Chicago has its own set of regulations regarding dog bites and animal attacks. Chicago’s municipal code requires all animal bites to be reported to the Chicago Department of Animal Care and Control within 24 hours. The city may place the dog under quarantine or investigate the incident to assess any risk to public safety. The owner of a biting animal is also required to pay a $25 public safety fine under the Illinois Animal Control Act, which is deposited into the county animal control fund.

Chicago also enforces leash laws and other restrictions to help prevent dog attacks in public spaces. Failure to comply with these local regulations may result in fines and penalties for the dog owner, in addition to liability for any injuries caused by their pet. Under Chicago Municipal Code Section 7-12-030, dogs must be leashed at all times when outside a fenced enclosure. An unleashed dog that bites someone near a park like Humboldt Park or in a shared building hallway in River North creates a strong case for owner liability.

Under 510 ILCS 5/26, any person who violates the Animal Control Act, obstructs enforcement, or makes misrepresentations about a biting animal is guilty of a Class C misdemeanor for a first offense and a Class B misdemeanor for any subsequent offense. Each day of non-compliance counts as a separate offense. If the owner of a vicious dog fails to comply with containment requirements and the dog then causes serious injury or death, the owner can face a Class 3 or Class 2 felony charge, depending on whether the non-compliance was knowing. These penalties exist alongside, not instead of, civil liability to the victim.

How Reporting Affects Your Personal Injury Claim

Filing a report with CACC or the police is not just a public safety step. It directly affects the strength of a personal injury claim. A Chicago personal injury lawyer will tell you that the official bite report becomes one of the most important pieces of evidence in your case. It documents the date, location, and identity of the animal, and it creates a paper trail that insurance companies cannot simply dismiss.

After a dog bite is reported, animal control will typically initiate an investigation. The process usually involves confirming the identity of the dog and its owner, verifying the dog’s rabies vaccination status, initiating a 10-day rabies observation period, determining whether the dog has bitten anyone else, and evaluating whether the dog poses a risk to public safety. If animal control records show prior complaints about the same dog, that history becomes powerful evidence in a civil claim. Prior complaints and animal control records often reveal a pattern of dangerous behavior that the owner knew about and failed to address.

Under the Illinois Animal Control Act Section 16, dog owners are liable for damages when their animals injure someone, provided the person was lawfully present and peaceably conducting themselves without provoking the animal. This law provides strong protections for bite victims, though it does include defenses such as provocation and assumption of risk. A timely bite report supports all three of those key elements by locking in the facts early. An experienced dog bite lawyer can use that report, combined with medical records and witness statements, to build a complete picture of what happened and what you are owed.

Do not let an insurance company convince you that a minor delay in reporting weakens your case beyond repair. But do act quickly. The sooner you report, the sooner the official record is created, and the harder it becomes for the dog owner to dispute the facts. Delays also give owners the opportunity to hide or relocate the dog, which is exactly what 510 ILCS 5/13(a-20) was written to prevent.

What Happens If the Dog Owner Fails to Comply?

When a dog owner refuses to cooperate with reporting or quarantine requirements, the legal consequences escalate fast. Under 510 ILCS 5/13(a-20), it is unlawful for an owner to refuse or fail to immediately comply with instructions from the animal control administrator. Any expense incurred in handling the animal under this section is borne by the owner. If the owner tries to hide the dog, sell it, or have it euthanized before the observation period ends, that is a criminal act.

A first violation of 510 ILCS 5/13(a-20) is a Class A misdemeanor. A second or subsequent violation is a Class 4 felony. These are not minor infractions. A dog owner in Bridgeport or Avondale who tries to avoid accountability by moving or disposing of the animal is committing a crime, and that conduct can also be introduced in a civil case to show consciousness of guilt and disregard for the victim’s rights.

If the incident is serious or if the dog has a history of aggression, animal control may investigate further and file a petition to classify the dog as dangerous or vicious under 510 ILCS 5/15 and 5/15.1. Once a dog is classified as dangerous, the owner faces mandatory microchipping, spay or neuter requirements, public muzzle and leash rules, and registration with local animal control. Owners who ignore or violate these provisions may face civil penalties and court orders, and their violations can be used to support claims of negligence in personal injury lawsuits.

If you were bitten by a dog and the owner is now being uncooperative or you suspect the animal has been removed, contact animal control and the police immediately. Then speak with a dog bite attorney who understands how owner non-compliance affects the value and direction of your claim. An owner’s refusal to follow the law is not just a criminal matter. It is evidence that strengthens your civil case. The attorneys at Briskman Briskman & Greenberg handle these situations regularly and can help you protect your rights from the moment you call (312) 222-0010.

If the bite happened outside Chicago’s city limits, perhaps in suburban Cook County or in a nearby community, the reporting process may differ slightly. Dog bite lawyers who practice throughout the region understand how county-level animal control rules interact with state law, and that knowledge matters when building your case. Similarly, if your injury occurred during travel or involved an out-of-state party, a dog bite attorney familiar with multi-jurisdiction claims can advise you on your options. Victims in the greater metro area, including those near Joliet, can also reach a dog bite attorney at Briskman Briskman & Greenberg for a free consultation.

FAQs About Chicago Dog Bite Reporting Requirements

Do I have to report a dog bite in Chicago even if the injury is minor?

Yes. Illinois law under 510 ILCS 5/13(a-15) requires any person with knowledge of a bite to notify the local animal control administrator within 24 hours, regardless of how serious the injury appears. A minor-looking wound can still carry infection risk, and the report creates an official record that protects you if complications develop later. Chicago’s municipal code mirrors this requirement and applies it to bites within city limits. Skipping the report does not make the situation go away. It only makes your legal position weaker.

What does the 10-day quarantine mean for me as a bite victim?

The 10-day quarantine period under 510 ILCS 5/13 is designed to monitor the biting dog for signs of rabies. During this time, the animal is confined and observed by a licensed veterinarian. At the end of the period, the vet examines the dog and submits a written report to the animal control administrator. As the bite victim, you should receive notification about the animal’s clinical condition. If rabies is confirmed, your attending physician will be alerted so that treatment can begin immediately. All costs of the quarantine are paid by the dog owner, not you.

What if the dog owner refuses to bring the dog in for quarantine?

Refusal to comply with quarantine instructions from the animal control administrator violates 510 ILCS 5/13(a-20) and is a criminal offense. A first violation is a Class A misdemeanor, and a second or subsequent violation is a Class 4 felony. The owner is also prohibited from concealing the dog, selling it, or having it euthanized before the observation period ends. If you believe the owner is hiding or disposing of the animal, report it to CACC and the police right away. This conduct can also be used as evidence in a civil personal injury claim against the owner.

Does my doctor have to report the dog bite, or do I need to do it myself?

Under 510 ILCS 5/18, any physician or medical personnel who treats a dog bite must report the incident to the local animal control administrator within 24 hours. So if you went to the ER or an urgent care clinic, your medical provider is legally required to file that report. However, you should not rely solely on your doctor to handle this. File your own report by calling 311 or visiting your local Chicago police district. Having two independent reports, one from your provider and one from you, creates a stronger and more complete record for any future legal claim.

How does the bite report help my personal injury case?

The official bite report is one of the most valuable documents in a dog bite injury claim. It establishes the date, time, and location of the attack, identifies the dog and its owner, and triggers the quarantine process that generates additional veterinary records. Animal control investigation records may also reveal prior complaints about the same dog, which can demonstrate the owner knew about the animal’s dangerous behavior. Under the Illinois Animal Control Act Section 16, dog owners are liable for damages when their animals injure someone, and a timely, detailed bite report supports the key facts you need to prove your claim. The attorneys at Briskman Briskman & Greenberg can help you gather and use these records effectively.

More Resources About Dog Bite Laws and Local Rules in Chicago

• What Happens After a Dog Bite in Chicago? (Step-by-Step Timeline)
• How Chicago Animal Control Handles Dog Bite Cases
• What to Expect from a Dog Bite Investigation
• Can a Dog Be Put Down After a Bite in Chicago?
• Chicago Leash Laws and Dog Bite Liability
• What Makes a Dog “Dangerous” Under Chicago Law?
• How Prior Complaints Affect Dog Bite Cases
• What If the Dog Owner Lies About the Incident?
• Can You Sue a Friend or Family Member for a Dog Bite?