New Bedford, MA Animal Ordinances: Mandatory Spay/Neuter (2026)
Key Facts
- Trigger
- Dog formally deemed dangerous, vicious, or potentially dangerous
- Required actions
- Spay/neuter, microchip, behavior training, rabies vaccination
- Medical exemption
- Written veterinarian certificate of unfitness for alteration
- Dangerous dog fine
- $300 after 30 days, per day thereafter
- Potentially dangerous dog fine
- $100/$200/$300 for 1st/2nd/later offenses
- Licensing surcharge
- $50 (dangerous) or $25 (potentially dangerous) annually
- Enforcing official
- New Bedford Animal Control Officer
Summary
New Bedford has no blanket spay/neuter law, but once the animal control officer formally deems a dog "dangerous or vicious" (Sec. 4-29) or "potentially dangerous" (Sec. 4-29.1), the city orders the owner to have the animal spayed or neutered, along with microchipping, behavior training and rabies vaccination. Owners can avoid the surgery only with a veterinarian's written certification that the dog is medically unfit for alteration.
(b)Duties of animal control when dog is deemed dangerous. When a dog is deemed to be dangerous or vicious, the animal control officer shall order all of the following:1.Spay or neutering, if the animal is not already altered. The animal will be exempt from such an order if a veterinarian certifies in a written statement that the animal is unfit for alterations because of medical conditions.
(b)Duties of animal control when dog is deemed potentially dangerous. When a dog is deemed to be potentially dangerous, the animal control officer shall order all of the following:1.Spay or neutering, if the animal is not already altered. The animal will be exempt from such an order if a veterinarian certifies in a written statement that the animal is unfit for alterations because of medical reasons.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 19).
Full Breakdown
Under Sec. 4-29, a dog becomes "dangerous" or "vicious" if it bites, attacks, or threatens a person or another animal, or was trained for dog fighting, with the determination left to the discretion of the animal control officer. Under Sec. 1, a dog is "potentially dangerous" if it is impounded or its owner cited twice in twelve months for running at large, or if it acts in a highly aggressive, unprovoked manner while appearing able to escape its enclosure; barking alone does not count. c.
140, § 145B. Owners of a potentially dangerous dog get an additional 60 days to provide whatever security upgrades the animal control officer specifies in writing, and no one under 18 may own, handle or be responsible for such a dog. Dangerous dogs also trigger outdoor confinement rules requiring a locked, inspected 12-by-12-foot, six-foot-high enclosure, muzzling and a four-foot leash outside it, "Beware of Dog" signage, and a $100,000 minimum liability insurance policy. The city layers a licensing surcharge on top of the standard dog license: $50 a year for a dangerous dog, $25 for a potentially dangerous dog, both enforced by the animal control officer.
Violations & Fines
Noncompliance thirty days after notice draws a $300 fine for a dangerous-dog owner, with each day of continued noncompliance a separate offense. A potentially dangerous dog owner faces $100 for a first offense, $200 for a second, and $300 for each offense after that, except the security-upgrade requirement carries a 60-day compliance grace period before fines attach.
Frequently Asked Questions
Does New Bedford require every dog owner to spay or neuter their pet?
Can I avoid a spay/neuter order for my dog?
What makes a dog "potentially dangerous" rather than just "dangerous" in New Bedford?
What happens if I ignore the order?
Sources & Official References
Other rules in New Bedford
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