Cook County, IL Animal Ordinances: Cat Rules (2026)
Key Facts
- Governing ordinance
- Ch. 10, Article IV, Sec. 10-97
- Required step
- Register colony with Department-approved Sponsor
- Health mandate
- Rabies vaccination, spay/neuter, and eartipping
- Nuisance cure period
- 30 days to resolve complaints
- Enforcer
- Cook County Dept. of Animal and Rabies Control
Summary
Cook County permits feral cat colonies countywide, but caretakers must register with a Department-approved Sponsor and follow trap-neuter-return vaccination and eartipping requirements under the county's Managed Care of Feral Cats ordinance.
(a)[Permitted.] Feral Cat Colonies shall be permitted and Feral Cat Colony Caretakers shall be entitled to maintain and care for Feral Cats by providing food, water, shelter and other forms of sustenance, provided that the Feral Cat Colonies are registered with a Department-approved Sponsor, as defined in Subsection 10-97(b), and that the Feral Cat Colony Caretaker takes all appropriate and available steps to meet the terms and conditions of this Ordinance.
Full Breakdown
Cook County's Ordinance for the Managed Care of Feral Cats (Chapter 10, Article IV) legalizes feral cat colonies countywide but conditions that protection on registration. A colony's caretaker isn't an "owner" in the eyes of animal control: instead they must register with a Department-approved Sponsor (typically a humane society), enroll the colony in a TNR program, get every cat vaccinated for rabies and spayed or neutered, eartip the left ear for identification, and file semiannual population reports. Colonies that generate a nuisance complaint the Sponsor can't resolve within 30 days can be ordered removed by the Cook County Department of Animal and Rabies Control.
Violations & Fines
Caring for an unregistered colony offers no legal protection, and colonies that keep creating nuisance complaints can be trapped and removed by county Animal Control after a 30-day cure period passes.
Frequently Asked Questions
Is it legal to feed feral cats in Cook County?
Does an unregistered feral cat caretaker have any legal standing?
Sources & Official References
Other rules in Cook County
Compare Cook County to another location·View the Illinois animal ordinances overview
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