Chicago, IL Animal Ordinances: Cat Rules (2026)
Key Facts
- Cat license required
- No (dogs only)
- Rabies vaccination
- Required every 3 years
- At-large fine
- $300 strict liability
- Impounded unsterilized cats
- Must be sterilized/microchipped before return
- Enforcing agency
- Chicago Animal Care and Control
Summary
Chicago does not require a cat license, only dogs need one, but owners must still vaccinate cats against rabies every three years and keep them under restraint, or face a $300 fine for a cat running loose.
Each owner shall keep and maintain his animal under restraint... It shall be unlawful for any owner to allow his or her animal to cross outside the property line of its owner to any extent, including reaching through, over or under a fence, or to keep or allow his or her animal to be outdoors on an unfenced portion of the owner's property, unless the animal is leashed and under the control of its owner or another responsible person... Any owner who violates any provision of this section shall be subject to a fine of $300.00.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-74: Current through Council Journal of June 17, 2026).
Full Breakdown
Under MCC 7-12-140, only dogs four months and older must be licensed with the City Clerk; cats are not mentioned and are not subject to that licensing scheme. Owners of cats (and dogs and ferrets) four months or older must still have the animal vaccinated against rabies every three years by a licensed veterinarian under 7-12-200. Because the Animal Care and Control chapter defines "animal" broadly to include cats, the restraint duty in 7-12-030 applies: an owner may not let a cat cross outside the property line, unescorted and off-leash, onto public or another's property. A cat picked up as a stray can be impounded under 7-12-040, and under 7-12-065 an unsterilized, unmicrochipped cat must be microchipped and sterilized before Animal Care and Control will release it back to its owner.
Violations & Fines
Letting a cat roam loose off the owner's property is a strict-liability restraint violation carrying a $300 fine (more if it causes injury or property damage); an impounded, unsterilized cat must be microchipped and sterilized before release.
Frequently Asked Questions
Do I need to license my cat in Chicago?
What happens if my cat gets outside and roams the block?
Does my cat still need a rabies shot even without a license?
Sources & Official References
Other rules in Chicago
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Cat Rules in Nearby Cities
How other cities in Cook County handle cat rules.