Lake County, IL Animal Ordinances: Breed Restrictions (2026)
Key Facts
- Section
- Lake County Code § 172.12
- Basis for declaration
- Behavior, not breed
- Owner notice window
- 3 business days
- Appeal route
- Illinois Administrative Review Law
- Enforcing officer
- Lake County Health Officer
Summary
Illinois law bars breed-specific ordinances, so Lake County Health Department declares dogs dangerous, vicious, or animal-aggressive based on behavior alone under Code § 172.12, then orders confinement, muzzling, or euthanasia through its own investigation and appeal process.
(A) Dangerous and/or vicious dog determinations and requirements. The determination that a dog is vicious or dangerous shall be made in accordance with the requirements of the Illinois Animal Control Act and this chapter. Any associated enforcement shall proceed in accordance with the requirements of the Illinois Animal Control Act, this chapter and the current fee schedule adopted by the County Board as codified in § 178.01.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-15: Supplement contains: Local legislation current through Ord. 26-0618, passed 6-9-2026 | State legislation current through ILCS Pamphlet 2025 #5).
Full Breakdown
Lake County Code § 172.12 splits dog-danger cases in two. Dangerous and vicious dog determinations follow the Illinois Animal Control Act plus the county's own enforcement and fee schedule. Separately, the Health Officer can independently declare a dog 'animal-aggressive' when clear and convincing evidence shows it caused serious injury or death to another companion animal without justification (self-defense and provocation are defenses). The Health Officer must notify the owner within three business days, may impound the dog during the investigation, and can order an approved enclosure, fenced yard, muzzle, leash, euthanasia, or an annual registration fee. Owners can appeal under the Illinois Administrative Review Law. Nothing in the chapter classifies dogs by breed.
Violations & Fines
Failure to comply with a dangerous, vicious, or animal-aggressive disposition can mean continued impoundment, boarding-fee liability, citation under the county fee schedule (§ 178.01), and court-ordered euthanasia after a Health Officer hearing.
Frequently Asked Questions
Does Lake County ban specific dog breeds?
What happens if the Health Officer declares my dog animal-aggressive?
Does this apply inside Waukegan or Highland Park?
Sources & Official References
Other rules in Lake County
How Lake County compares: Cities with No Dog Breed Restrictions·Compare Lake County to another location·View the Illinois animal ordinances overview
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