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McHenry County, IL Animal Ordinances: Exotic Pets (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing law
720 ILCS 585 (Dangerous Animals Act)
Big cats / bears / wolves
Banned for private owners
Large constrictors
Banned (6 ft or longer)
Crocodilians
Banned
Exceptions
Zoos, licensed exhibitors only

Summary

Illinois' Dangerous Animals Act (720 ILCS 585) bars private residents in McHenry County from keeping big cats, bears, wolves, coyotes and life-threatening reptiles such as crocodilians and large constricting snakes. Only zoos, licensed exhibitors and similar facilities may keep them in escape-proof enclosures.

These county ordinances apply to unincorporated areas of McHenry County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

No person shall have a right of property in, keep, harbor, care for, act as custodian of or maintain in his possession any dangerous animal except at a properly maintained zoological park, federally licensed exhibit, circus, scientific or educational institution, research laboratory, veterinary hospital or animal refuge in an escape-proof enclosure.

View official code

Full Breakdown

Under the Illinois Dangerous Animals Act, a "dangerous animal" means a lion, tiger, leopard, ocelot, jaguar, cheetah, margay, mountain lion, lynx, bobcat, jaguarundi, bear, hyena, wolf or coyote, or any poisonous or life-threatening reptile: including crocodilians and constricting snakes six feet or longer such as boas, pythons and anacondas. No private individual may keep such an animal; the only exceptions are properly maintained zoological parks, federally licensed exhibits, circuses, research or educational institutions, veterinary hospitals and animal refuges with escape-proof enclosures. It is no defense that the owner tried to domesticate the animal. McHenry County Animal Control enforces alongside state authorities.

Violations & Fines

Keeping a prohibited dangerous animal is a criminal offense under 720 ILCS 585; the animal is seized and the keeper is subject to prosecution and fines.

Frequently Asked Questions

Can I own a big cat, wolf or large python in McHenry County?
No. The Illinois Dangerous Animals Act bans private ownership of big cats, bears, wolves, coyotes and life-threatening reptiles including constricting snakes six feet or longer. Only licensed facilities qualify.
Does trying to tame the animal make it legal?
No. The Act states it is no defense that the person attempted to domesticate the dangerous animal; private possession remains prohibited regardless of the owner's experience.

Sources & Official References

Other rules in McHenry County

Dog Leash LawsSome RestrictionsChickens & LivestockSome RestrictionsFire Regulations: Fire Pits & Backyard FiresLight RestrictionsMicrochippingSome RestrictionsCat RulesSome RestrictionsVeterinary Clinic ZoningSignificant RestrictionsBreed RestrictionsSome RestrictionsMandatory Spay/NeuterSome RestrictionsBeekeepingSome RestrictionsPet LimitsSome RestrictionsParking Rules: Loading ZonesSome RestrictionsFire Regulations: Outdoor BurningSignificant RestrictionsLandscaping Rules: Rainwater HarvestingFew RestrictionsSign Regulations: Digital BillboardsSome RestrictionsShort-Term Rentals: Short-Term Rental Parking RulesSome Restrictions

All McHenry County rules

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