Boulder Revised Code Title 6 requires dogs and cats over six months to be spayed or neutered, with limited exemptions for licensed breeders, show animals, and dogs with documented medical contraindications. Humane Society of Boulder Valley enforces.
BRC Title 6 (Health, Sanitation, and Animals) mandates altering of dogs and cats over six months residing in Boulder. Owners seeking exemption must obtain an unaltered animal permit, typically requiring proof of pedigree registration, active show competition, breeding licensure, or a veterinarian's written statement that anesthesia or surgery would endanger the animal. Boulder is one of few Colorado cities with such an ordinance. Humane Society of Boulder Valley operates the contracted animal services program and provides low-cost spay/neuter clinics. Enforcement typically follows other complaints rather than proactive sweeps, but unaltered dogs picked up at large face higher reclaim fees.
Civil penalty plus elevated impound and reclaim fees; required altering before reclaim or proof of valid exemption permit on file with the city.
Boulder, CO
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Boulder, CO
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See how Boulder's mandatory spay/neuter rules stack up against other locations.
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