Boston's Animal Ordinances: The Rules That Matter

Every city handles animal ordinances a little differently. In Boston, Massachusetts, there are 13 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Animal Hoarding

Boston Animal Control and the MSPCA investigate hoarding cases under MGL Ch. 272 §77, which criminalizes cruelty when owners keep more animals than they can house, feed, or maintain in sanitary conditions.

Key details: Lead enforcer: Boston Animal Control + MSPCA. Statute: MGL Ch. 272 §77. Max penalty: 7 years prison. Health overlay: BPHC unfit-for-habitation order.

Felony cruelty under MGL Ch. 272 §77 carries up to 7 years prison or a fine up to $5,000, plus court-ordered animal forfeiture and possession bans.

Compared to other cities, Boston takes a harder line on animal hoarding. The enforcement and penalty structure reflects that.

Cat Rules

Boston does not require cat licenses, but cats must be vaccinated against rabies under MGL Ch. 140 §145B. Owners are liable for damage their cats cause and Animal Control may impound stray cats.

Key details: License required: No. Rabies vaccination: Required at 6 months. Statute: MGL Ch. 140 §145B. Stray contact: Animal Control 617-635-5348.

Failure to vaccinate against rabies is punishable by a fine up to $100 per offense under MGL Ch. 140 §145B; nuisance complaints may result in impoundment fees and citations.

Mandatory Spay/Neuter

Boston has no blanket mandatory spay-neuter ordinance, but every dog or cat adopted from Boston Animal Care and Control must be sterilized before release under MGL Ch. 140 §139A and city policy.

Key details: Shelter-release rule: MGL Ch. 140 §139A. Private mandate: None. Intact dog license: ~3x altered fee. Low-cost partner: ARL Boston, MSPCA.

Adopters who fail to sterilize a shelter-released animal forfeit any deposit and may be barred from future adoptions; intact dog license fees are roughly triple altered fees.

Microchipping

Boston does not require microchipping privately owned pets, but every dog and cat adopted, redeemed from impound, or licensed through Animal Care and Control is microchipped as a condition of release.

Key details: City mandate: No. Shelter standard: All animals chipped. Impound redemption fee: Includes chip cost. Hold period: Set by state law.

There is no fine for not microchipping, but unchipped stray pets are far harder to reunite and may be transferred for adoption after the statutory hold period if no owner is identified.

If you are coming from a city with tighter rules, you will find Boston gives residents more flexibility on microchipping.

Pet Limits

Under Boston Code Ch. 16-1.9F, any household keeping four or more dogs over six months old must obtain a multiple-dog permit from Boston Animal Care and Control after a site inspection.

Key details: Threshold: 4+ dogs over 6 months. Code section: Boston Code Ch. 16-1.9F. Inspection: Required before issuance. Renewal: Annual.

Operating without the required multiple-dog permit is a Class D civil violation under Ch. 16-12, with fines up to $300 per offense and potential per-day continuing penalties.

Pet Store Rules

Massachusetts banned retail pet shop sales of dogs, cats, and rabbits sourced from commercial breeders effective 2025 under An Act Protecting the Health and Safety of Puppies and Kittens, applied citywide in Boston.

Key details: Source rule: Shelter or rescue only. Effective: 2025 (St. 2024 c. 339). Penalty: Up to $500 per animal. City oversight: BPHC + ISD.

Violations of the state pet-shop sourcing law expose retailers to civil penalties up to $500 per animal and license revocation; BPHC may also order closure for animal welfare violations.

Compared to other cities, Boston takes a harder line on pet store rules. The enforcement and penalty structure reflects that.

Livestock

Boston prohibits traditional livestock (cows, pigs, goats, sheep, horses) on residential lots. Only hens and bees are allowed under Urban Agriculture Article 89.

Key details: Allowed on Residential: Hens, bees only. Prohibited: Pigs, goats, sheep, horses. Removal Order: 14 days. Fine: Up to $300/day.

Specific penalty amounts for this ordinance are not published in a publicly accessible fine schedule. Contact [Boston code enforcement](https://www.google.com/search?q=Boston%20code%20enforcement) directly for current fines, enforcement procedures, and hearing options.

Compared to other cities, Boston takes a harder line on livestock. The enforcement and penalty structure reflects that.

Exotic Pets

Massachusetts prohibits most wild and exotic animals as pets under 321 CMR 9.01. MassWildlife does not issue pet permits. Only species on the exemption list may be kept without a license.

Key details: System: Exemption list (321 CMR 9.01). Pet Permits: Not issued by state. Exempt Species: Hedgehogs, chinchillas, etc.. Venomous Snakes: Permit required.

Unlawfully possessed animals subject to seizure and disposal by the Director of Law Enforcement. Criminal penalties may apply under MGL c. 131 Section 23.

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

Wildlife Feeding

Boston prohibits feeding of wildlife that attracts rodents or creates a nuisance under City Code 16-1.9, and MassWildlife bans feeding of bears, coyotes, and deer statewide.

Key details: City Rule: City Code 16-1.9. State Ban: Bears, coyotes, deer (321 CMR 2.14). Cat Colonies: Managed permit required. Park Pigeon Feed: Prohibited.

Chickens & Livestock

Boston allows backyard hens under the 2013 Urban Agriculture Article 89 zoning with a maximum of 6 hens, no roosters, and a 10-foot coop setback from property lines.

Key details: Max Hens: 6 (no roosters). Coop Setback: 10 ft lot line, 25 ft dwelling. Slaughter: Prohibited. Large Livestock: Residential ban.

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

Beekeeping

Boston allows up to 2 beehives per lot for personal use under Article 89, with setback and height restrictions. All hives must be registered with the MA Department of Agricultural Resources.

Key details: Max Hives: 2 per lot (personal). Urban Farm: 3 hives allowed. Registration: MDAR required. Neighbor Consent: If within 20 ft.

Exceeding hive limits or failing to maintain required setbacks can result in code enforcement. Unregistered hives violate state apiary inspection requirements. Neighbor complaints may trigger inspection.

Breed Restrictions

Massachusetts does not ban specific dog breeds statewide. Some municipalities have attempted BSL with mixed results. Dangerous dog provisions are behavior-based.

Key details: State Breed Ban: None. Dangerous Dogs: Behavior-based. State Law: MGL c.140 §157. Local BSL: Some attempts, mixed results.

Dangerous dog orders: restraint, muzzling, confinement. Failure to comply: fines up to $500. Severe attack: possible euthanasia order.

Dog Leash Laws

Boston requires dogs under control at all times (MGL c.140 §157). Dog licensing required through city/town clerk (MGL c.140 §155). Rabies vaccination mandatory.

Key details: Leash: Required in public. License: Annual, city/town clerk. State Law: MGL c.140 §§155, 157. Rabies: Vaccination required.

Dog at large: $25 to $100. Unlicensed dog: $50 to $100 + late fee. Failure to clean up: $25 to $100. Dangerous dog: significant penalties.

The Bottom Line

Boston is tougher than many cities when it comes to animal ordinances. Out of the 13 rules covered here, 5 are rated strict. If you are a homeowner, renter, or business owner in Boston, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

These rules come from Boston's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.