Who is liable if a dog bites me in Illinois?

1. Liability Standard

Illinois is a strict-liability state under the Animal Control Act, 510 ILCS 5/16. No proof of scienter is required.

2. Statutory Elements

Plaintiff must prove: (a) injury caused by an animal owned by defendant; (b) lack of provocation; (c) peaceable conduct by the plaintiff; and (d) plaintiff was in a place where they had a legal right to be.

3. Common-Law "One-Bite" Doctrine

Common-law negligence remains available alongside the statute when plaintiffs cannot satisfy the statutory elements.

4. Trespasser Defense

The "legal right to be" requirement excludes trespassers from statutory recovery; trespassers must pursue common-law theories and prove scienter.

5. Provocation Defense

Provocation is a complete defense. Both intentional and unintentional provocation (sudden movements) can qualify (Nelson v. Lewis).

6. Comparative Fault

Illinois's modified comparative-fault rule (735 ILCS 5/2-1116) bars recovery if plaintiff is more than 50% at fault. Comparative fault applies even in strict-liability dog-bite cases.

7. Landlord Liability

Landlords are generally not liable absent actual knowledge of the dog's viciousness and contractual ability to remove it (Steinberg v. Petta).

8. Homeowner's Insurance

Illinois homeowner's policies typically cover dog bites; breed-specific exclusions are common.

9. Damages

Medical bills, lost wages, scarring, disfigurement, future surgeries, and emotional distress. Children especially recover for scarring.

10. Criminal Liability

Under 510 ILCS 5/15, owners of "vicious dogs" that cause serious injury can face Class 4 felony charges; death by a vicious dog can support Class 3 felony charges.

This is legal information, not legal advice.