Fort Collins, CO Animal Ordinances: Breed Restrictions (2026)
Key Facts
- Breed rule
- No breed-specific ban exists
- Standard
- Conduct-based dangerous animal finding
- Permit issuer
- Humane Society or Municipal Judge
- Insurance
- $1,000,000 liability required, § 4-197
- Confinement
- Locked pen 15 ft from dwellings
- Permit cap
- Max 2 permits per premises
- Charge level
- Criminal misdemeanor, not civil infraction
Summary
Fort Collins has no breed-specific ban; instead, Municipal Code § 4-96 bars owning any "dangerous animal" unless the Humane Society or Municipal Judge has issued a permit, based on the animal's conduct rather than its breed. A dangerous-animal finding triggers annual registration, $1 million liability insurance and strict confinement rules under § 4-197.
It shall be unlawful for any person to own, possess, harbor, keep or maintain any dangerous animal within the City unless the Humane Society or the Municipal Judge has issued a permit for such animal consistent with the provisions contained in Subsection (c) below.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Municipal Code: Supplement 155 | Transitional Land Use Code (for project before May 17, 2024): Supplement 61 | Traffic Code: Supplement 27).
Full Breakdown
Fort Collins' Municipal Code does not single out any dog breed by name. Instead, § 4-1 defines a "dangerous animal" by conduct: one that has attacked or bitten a person causing bodily injury, killed or seriously injured another pet, chased, confronted or approached a person in a menacing fashion that would put a reasonable person in fear of attack, shown a propensity to attack without provocation, or otherwise acted so its owner should know it is potentially vicious. " An animal control officer with reasonable grounds may issue a summons and a temporary permit with conditions such as a visible identification collar, confinement specs (a locked pen at least 3 feet from any property line and 15 feet from a neighboring dwelling, or a muzzle and 6-foot leash), and warning signage.
If the Municipal Judge makes the dangerous-animal finding permanent, § 4-197 adds annual registration, a Humane Society-issued collar, a $1,000,000 liability insurance policy naming the City, a microchip, mandatory spay/neuter within 10 days, and a limit of two dangerous-animal permits per premises under § 4-96(c)(7). A separate, harsher "vicious animal" category in § 4-97, for repeat or fatal attacks or fighting dogs, bans ownership outright with no permit option.
Violations & Fines
Sections 4-96 and 4-97 are both on the § 4-196 misdemeanor exception list, so violating a dangerous-animal permit or owning a vicious animal is a criminal misdemeanor, not a civil infraction, punishable under § 1-15 by a fine and possible jail time. Under § 4-197(b), the Municipal Judge can also order the animal destroyed, require microchipping and owner education classes, or order the animal surrendered if permit conditions are violated.
Frequently Asked Questions
Does Fort Collins ban pit bulls or other specific breeds?
What happens once a dog is declared dangerous?
Is a dangerous-animal violation a criminal charge in Fort Collins?
Sources & Official References
Other rules in Fort Collins
How Fort Collins compares: Cities with No Dog Breed Restrictions·Compare Fort Collins to another location·View the Colorado animal ordinances overview
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Breed Restrictions in Nearby Cities
How other cities in Larimer County handle breed restrictions.