St. Charles County, MO Animal Ordinances: Pet Store Rules (2026)

Section 205.010 defines a pet shop as "any commercial establishment where dogs, cats or other small animals are bought, sold, or exchanged," and separately defines dealer, boarding kennel, breeding kennel and grooming shop. Section 205.160(A) makes it unlawful to keep or maintain any of those businesses "without first obtaining a valid registration from the Division," and 205.160(B) requires a separate registration for each physical facility, running one year from issuance. Before that registration issues, Section 205.170 requires a zoning-compliance letter from the County's Division of Planning and Zoning and a health inspection certificate showing compliance with the operating standards in Sections 205.180 through 205.210: adequate shelter and drainage, food and bedding storage protected from rodent and insect infestation, isolation of sick animals from sale stock, a proprietor or competent person on-site whenever the business is open, and a written veterinary-care agreement for boarding and breeding facilities.

Section 205.180(B) makes it independently unlawful to operate a shop that is "unsanitary, detrimental to public health and/or safety, or not in compliance" with those conditions. If an inspector finds a violation, Section 205.180(C) requires a notice giving the owner ten days to correct it, followed by re-inspection within three days; uncorrected violations trigger registration revocation and closure under 205.180(D), appealable to the Department Director within five days.