St. Charles County, MO Animal Ordinances: Breed Restrictions (2026)
Key Facts
- Basis for declaration
- Bite severity, not breed
- Governing scale
- Dunbar Dog Bite Scale
- Off-property rule
- Muzzle + 4-ft leash required
- Deciding official
- Dept. of Public Health Director
- Max penalty
- $1,000 fine / 1 year jail
Summary
St. Charles County does not ban dogs by breed. Instead, the Health Department declares individual dogs "dangerous" case-by-case based on documented bites, then imposes muzzle, confinement, and insurance mandates on that dog.
DANGEROUS DOG -- Any dog with the following characteristics: 1. Any dog which has inflicted a severe or fatal injury on a human... 2. Any dog declared by the Department Director to be dangerous pursuant to Section 205.142(C) and (D) of this Chapter or lawfully declared dangerous by a City or municipality within the County.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4863880; v61 updated 2026-05-11; through 05-11-2026).
Full Breakdown
Under Section 205.010, a "Dangerous Dog" is one that has inflicted a severe or fatal injury on a human (backed by a physician's statement) or one the Department Director has declared dangerous under Section 205.142(C)-(D) after investigating a bite, using the Dunbar bite-severity scale rather than breed. Once declared, the dog must wear a "Dangerous Dog" collar, stay behind a locked pen, and be muzzled and leashed off-property. No county ordinance singles out pit bulls or any other breed.
Violations & Fines
Harboring an undeclared dangerous dog, or violating a declared dog's muzzle/confinement/insurance conditions, is a Chapter 205 misdemeanor: up to a $1,000 fine, up to one year in the county jail, or both, with each day counted as a separate offense.
Frequently Asked Questions
Does St. Charles County ban pit bulls or other breeds?
What happens once a dog is declared dangerous?
Sources & Official References
Other rules in St. Charles County
How St. Charles County compares: Cities with No Dog Breed Restrictions·Compare St. Charles County to another location·View the Missouri animal ordinances overview
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