Maine state law: barking dogs and animal noise

7 MRS Section 3950 (Local regulations) is the controlling statewide rule: 'A municipality may adopt or retain more stringent ordinances, laws or regulations dealing with the subject matter of this chapter. Any less restrictive municipal ordinances, laws or regulations are invalid and of no force and effect. Municipalities may not adopt breed-specific ordinances, laws or regulations. Notwithstanding any provision of municipal ordinance, law or regulation to the contrary, a municipal ordinance, law or regulation governing barking dogs may not apply to dogs engaged in herding livestock or to agricultural guard dogs engaged in protecting livestock.' Maine sets no statewide barking-dog decibel limit or duration trigger - the operative rule is set municipally. Habitual barking that constitutes 'loud and unreasonable noise' can also support a Class E disorderly conduct charge under 17-A MRS Section 501-A once an officer orders the noise to cease.

Municipal civil fines (typical Maine range: $25 first offense up to $500 for repeat violations). Owners of dogs declared 'nuisance' or 'dangerous' under 7 MRS Section 3907 et seq. face restraint, confinement, and signage orders.