Brockton, MA Animal Ordinances: Mandatory Spay/Neuter (2026)

Section 3-10 sets the adoption rule: "No unclaimed dog shall be released for adoption without being sterilized or without written agreement from the adopter guaranteeing that such animal will be sterilized," and the adopter must pay "a deposit of at least one hundred dollars ($100.00)... at the time of adoption," refunded once the adopter provides proof the dog has been sterilized. This applies to dogs that come through the city's own impoundment and adoption process under Section 3-8, not to every dog already owned in Brockton.

The second trigger targets repeat at-large dogs. Section 3-7(f) provides that if a "reproductively whole dog is found to be at large on three (3) occasions," documented by an animal control officer or another authorized city agent, "the animal may be surgically sterilized and microchipped before returning to the owner." The owner bears every cost of the procedure and an additional $100 transportation fee. Read together with the impoundment rules in Section 3-8, an owner whose dog racks up three at-large violations in one licensing period can also face license revocation under Section 3-8(h), on top of the sterilization requirement and its costs. There is no ordinance in Chapter 3 that mandates sterilization for a dog that has never been impounded, been adopted from the city, or been picked up at large three times; outside those triggers, spay/neuter remains the owner's choice.