How St. Louis Handles Animal Ordinances: A Practical Guide

St. Louis maintains 156 local ordinances across all categories, and 10 of those deal specifically with animal ordinances. Here is a breakdown of what the city actually requires, what is prohibited, and where St. Louis falls on the strict-to-permissive spectrum compared to other cities.

Breed Restrictions

St. Louis's Health Commissioner can declare any dog "dangerous" after a documented bite, attack, or prior warning, triggering mandatory registration, $50,000 liability coverage, and muzzle-and-leash rules: the law targets behavior, not breed.

Key details: Basis: documented behavior, not breed. Registration: certificate required, City-issued. Insurance: $50,000 bond or liability policy. Restraint: muzzle + 6-ft leash outside enclosure. Appeal window: 5 days to request hearing.

Keeping an unregistered dangerous dog, or one without required insurance or a proper enclosure, triggers immediate confiscation. A conviction under Title 10 carries a fine of $100-$500 or up to 90 days in jail for a first offense, rising to at least $500 and 10 days' jail for a third.

This is one of the stricter rules in St. Louis's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Chickens & Livestock

St. Louis bans keeping cattle, sheep, goats, hogs and roosters anywhere in the city, treating it as a public nuisance; one neutered or spayed Vietnamese pot-bellied pig per parcel is the sole exception.

Key details: Large farm animals: cattle, sheep, goat, swine: banned. Also banned: roosters, Africanized bees, Asian Carp. Pig exception: 1 pot-bellied pig per parcel. Fine: $100–$500, up to 90 days jail. Enforcer: Health Commissioner / Police.

Violating this part is punishable by a fine of $100 to $500, up to 90 days imprisonment, or both, per § 10.20.020; an unpermitted or overdue pot-bellied pig can also simply be ordered removed within 48 hours.

This is not one of those rules that cities tend to ignore. St. Louis actively enforces its chickens & livestock requirements.

Mandatory Spay/Neuter

St. Louis allows only one pot-bellied pig per parcel, and the privilege is conditioned on fixing it: males must be neutered by four weeks old, females spayed by 120 days old.

Key details: Pigs allowed: One per parcel. Males: Neutered by 4 weeks old. Females: Spayed by 120 days old. Pedigree: Must be purebred, litter papers required. Penalty: $100-$500 fine or up to 90 days jail.

Violations of Title 10's animal-keeping part are punished by a fine of $100 to $500, up to 90 days in jail, or both, under § 10.20.020; a pig deemed a nuisance must be removed from the City within 48 hours of that finding.

Microchipping

St. Louis requires dogs declared "Dangerous Dogs" to be spayed or neutered and micro-chipped for identification before the Health Commissioner will issue a certificate of registration, and applies the same requirement to biting or impounded animals before release from the animal regulation center.

Key details: Applies to: Dogs declared "Dangerous Dogs". Requires: Spay/neuter plus microchip for ID. Also required for: Biting animals before release. Enforced by: Commissioner of Health. Exempt: Police, service, licensed breeder animals.

Keeping a Dangerous Dog without a valid certificate of registration under § 10.04.270 is unlawful; the animal is subject to immediate confiscation and, after an attack causing severe injury or death, destruction by the Commissioner of Health.

Dog Leash Laws

St. Louis requires dogs in any public street, park, or public place to be on a secure leash no more than six feet long, held continuously by a person able to control the dog.

Key details: Max leash length: 6 feet. Where required: Streets, parks, public places. First-offense fine: $100. Repeat-offense fine: $300 / $500. Enforcing agency: Health Dept., Animal Regulation Division.

$100 first offense, $300 second, $500 third and subsequent (administrative citation).

Beekeeping

Urban beekeeping is allowed in St. Louis under SLRC 10.12 with registration at the Missouri Department of Agriculture required per RSMo 264.011. Hives must be set back 10 feet from property lines and screened from neighbors.

Key details: State Registration: RSMo 264.011 required. Setback: 10 ft from property line. Max Hives: 2-6 based on lot size. Flyway Barrier: 6 ft if within 25 ft of home. Code: SLRC 10.12.

$100 for unregistered hive; order to remove for non-compliant setbacks. Swarming nuisance can trigger abatement order.

Pet Limits

St. Louis caps residential households at four domestic animals, dogs and cats, before requiring a noncommercial kennel permit from the Health Commissioner for up to eight.

Key details: Base limit: 4 domestic animals per residential parcel. Permit ceiling: Up to 8 with kennel permit. Permit fee: $60 inspection fee, renewed annually. Enforcement: Health Division; referred to City Counselor.

Health Division mails a notice requiring correction within 14 days; uncorrected violations go to the City Counselor for prosecution, and permit holders risk summary revocation for refusing a follow-up inspection.

Bird Protection

St. Louis bans molesting, injuring, or disturbing small birds and their nests citywide, with sparrows, pigeons, and starlings excepted.

Key details: Protected class: all small birds, nests, young, brood. Excepted species: hawks, sparrows, vultures, owls, pigeons, starlings. Penalty: $5–$500 fine or 6 months jail. Nuisance-bird disposal: set by Health Commissioner rules.

Violation is a misdemeanor under Section 10.12.010's general animal penalty: a fine of $5 to $500, up to six months in the City Workhouse, or both.

Exotic Pets

St. Louis prohibits ownership of dangerous wild animals under SLRC 10.16 and RSMo 578.023. Banned species include large cats, bears, primates, venomous snakes, and crocodilians. Violations carry $500 fines and animal seizure.

Key details: State Law: RSMo 578.023. Code: SLRC 10.16. Banned: Big cats, bears, primates, venomous reptiles. Ferrets: Prohibited in city. Fine: $500 + seizure costs.

$500 fine, immediate seizure, owner liable for sanctuary placement costs which can exceed $5,000. Criminal charges under RSMo 578.023 possible.

Compared to other cities, St. Louis takes a harder line on exotic pets. The enforcement and penalty structure reflects that.

Cat Rules

St. Louis requires every owned cat to be rabies-vaccinated and registered with a $50 tag, bars cats from running at large, and separately licenses feral cat colonies through Health Department-approved caregiver sponsors under a formal TNR program.

Key details: Vaccination-registration fee: $50 (or $4 if fixed). At-large fine, 1st offense: $100. At-large fine, 3rd offense: $500. Feral colonies: Must register with approved sponsor. Ear-tipped feral cats: Exempt from registration.

Administrative citations under the Schedule of Fines (§ 11.95.130) set an unleashed or loose cat fine at $100 for a first offense, $300 for a second, and $500 for a third and subsequent offense, tied to § 10.04.225.

The Bottom Line

St. Louis is tougher than many cities when it comes to animal ordinances. Out of the 10 rules covered here, 3 are rated strict. If you are a homeowner, renter, or business owner in St. Louis, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

This guide is based on St. Louis's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.