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Massachusetts Statewide Rule

Massachusetts Dog Leash and Restraint Laws

Some RestrictionsApplies statewide across Massachusetts (2026)

Key Facts

Statute
M.G.L. c. 140 §155-174E
Tethering Limit
5 hours daily max
Owner Liability
Strict liability
Local Authority
Cities set leash rules
Last verified: August 20, 2026Source: Massachusetts General Court

Summary

State law requires dogs be effectively controlled or restrained, with municipalities authorized to enact local leash ordinances. Owners are strictly liable for dog-caused injuries.

Section 174E: Chaining or tethering dog; confinement; restrictions; penalty Section 174E. (a) No person owning or keeping a dog shall chain or tether a dog for longer than 5 hours in a 24–hour period and outside from 10:00 p.m. to 6:00 a.m., unless the tethering is for not more than 15 minutes and the dog is not left unattended by the owner, guardian or keeper. A tethering employed shall not allow the dog to leave the owner's, guardian's or keeper's property. The tether shall be designed for dogs and no logging chains or other lines or devices not designed for tethering dogs shall be used. No chain or tether shall weigh more than 1/8 of the dog's body weight. Nothing in this section shall be construed to prohibit a person from walking a dog on a hand-held leash. No dog under the age of 6 months shall be tethered outside for any length of time. (b) A person owning or keeping a dog may confine such dog outside, subject to the restrictions in this section, through the use of any of the following methods: (1) inside a pen or secure enclosure, if the following conditions are met: (i) the pen or secure enclosure shall have adequate space for exercise with a dimension of at least 100 square feet; provided, however, that commercial dog kennels with pens intended for the temporary boarding of dogs shall be exempt from this requirement;

Source: Massachusetts General CourtView official code

Full Breakdown

Under M.G.L. Chapter 140 Sections 173A and 174E, dogs cannot be chained or tethered outside for more than five hours per day or between 10pm and 6am. Owners are strictly liable under Section 155 for damages caused by their dog. Municipalities may adopt leash ordinances, and most cities require leashes in public spaces. State law authorizes animal control officers to impound loose dogs.

Violations & Penalties

Fines from $50 to $500 per violation; impoundment of dog; potential strict liability for damages caused by unleashed dog.

Frequently Asked Questions

Are dogs required to be leashed statewide in Massachusetts?
State law does not impose a universal leash requirement, but most municipalities require leashes in public. Owners must control dogs and are strictly liable for damages.
How long can a dog be tethered outside in Massachusetts?
M.G.L. c. 140 §174E limits outdoor tethering to five hours per 24-hour period and prohibits tethering between 10pm and 6am.

Sources

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