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Medford, MA Animal Ordinances: Microchipping (2026)

Light Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Trigger
dog declared dangerous or potentially dangerous
Ordering officials
animal control officer, police chief or health director
Order type
microchip identification (Sec. 6-44(b)(4))
Cost
borne by the dog's owner or keeper
Related duty
feral cat caretakers must scan traps for chips

Summary

Medford has no blanket microchip mandate for pets. Sec. 6-44(b) of the Revised Ordinances lets the animal control officer, police chief or health director order microchip identification for a dog once it is declared dangerous, with the owner paying any associated cost.

(b)Duties of animal control when dog is deemed dangerous. When a dog is deemed dangerous, the city animal control officer, police chief or his designees or the director of public health or his designees may take any or all of the following actions and any expenses associated with any such action shall be paid by the owner or keeper of the dog:(1)Seize and impound the dog until further order is made with respect to such dog.(2)Make an order concerning the restraint or disposal of the dog in accordance with M.G.L. c. 140, § 157 including an order to euthanize the dog.(3)Fine owner of a dog which has killed, attacked or inflicted personal injury upon a person or domestic animal.(4)Make an order concerning microchip identification of the dog.

Full Breakdown

The microchip requirement in Medford's code is tied to the dangerous-dog process, not a general pet rule. Once a dog is deemed dangerous under Sec. 6-44, the animal control officer, police chief or director of public health, or their designees, can seize and impound the dog, order restraint or disposal consistent with M.G.L. c. 140, § 157, fine the owner for any injury the dog caused, and make an order concerning microchip identification of the dog, with the owner covering the expense of any of these actions.

Sec. 6-45(b) repeats the same microchip-order power for dogs declared "potentially dangerous," such as those impounded three or more times in twelve months for running off-leash. Separately, in the feral cat article, Sec. 6-110(b) requires anyone registered as a feral cat caretaker to check every trapped cat for existing microchip identification and to report a chip find to the animal control officer. Outside these two contexts, an owner is not required by the local code to implant a chip in a healthy, unreported dog or cat.

Because the microchip order is one of the compliance conditions attached to a dangerous or potentially dangerous designation, failing to carry it out is treated the same as ignoring any other order under those sections.

Violations & Fines

Failing to comply with a microchip order issued under a dangerous-dog designation draws the Sec. 6-44(l) fine of $500 after 30 days' notice, with each noncompliant day a separate offense. Under a potentially-dangerous designation, Sec. 6-45(e) instead fines $100 for a first offense, $200 for a second, and $300 for a third or later offense of any ordered condition, including a microchip order.

Frequently Asked Questions

Does Medford require every dog to be microchipped?
No. The Revised Ordinances only authorize a microchip order under Sec. 6-44 or Sec. 6-45 once a dog has been formally declared dangerous or potentially dangerous; there is no general microchip mandate for pets that have not been through that process.
Who can order my dog to be microchipped in Medford?
Sec. 6-44(b) gives that authority to the city animal control officer, the police chief, or the director of public health, or their designees, once the dog has been deemed dangerous, and the owner pays for any resulting expense.
What if I ignore a microchip order for my dangerous dog?
Sec. 6-44(l) treats it like any other unmet condition: a $500 fine applies once 30 days pass after notice without compliance, and each additional day the order is unmet counts as a separate offense.
Do feral cat caretakers have microchip duties?
Yes. Sec. 6-110(b) requires anyone registered as a feral cat caretaker to check every cat they trap for existing microchip identification and to report any chip found to the animal control officer.

Sources & Official References

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