How Denver Handles Animal Ordinances: A Practical Guide
Denver maintains 158 local ordinances across all categories, and 11 of those deal specifically with animal ordinances. Here is a breakdown of what the city actually requires, what is prohibited, and where Denver falls on the strict-to-permissive spectrum compared to other cities.
Cat Rules
Denver requires every cat over six months to be licensed, but exempts microchipped or tattooed cats from wearing the tag, while mandating spay/neuter unless the owner holds an annual intact permit.
Key details: License deadline: 30 days after acquiring a cat over 6 months. Tag exception: Waived if microchipped or tattooed. Spay/neuter: Mandatory unless intact permit issued. Enforcing agency: Denver Animal Protection.
Keeping an unlicensed, untagged (and unchipped/untattooed), or unaltered-without-permit cat is enforceable by Denver Animal Protection through an administrative citation or summons and complaint under DRMC Chapter 8.
This is not one of those rules that cities tend to ignore. Denver actively enforces its cat rules requirements.
Pet Groomer Rules
Denver requires anyone operating a pet grooming shop to hold a license from the director of excise and licenses, with the department of public health and environment reviewing and inspecting the business.
Key details: License required: Yes, from Excise and Licenses. Governing law: DRMC Chapter 8, Article IV. Approval needed from: Zoning admin + health dept. Fees set by: DRMC § 32-89. Subject to: Health dept facility inspection.
Operating a pet grooming shop without a license violates Section 8-111 and is enforced through licensing action by excise and licenses and inspections by animal protection officers.
Microchipping
Denver does not require microchips for ordinary pets, but a potentially dangerous animal permit and a pit bull breed-restricted permit both require the animal to be microchipped before the permit issues.
Key details: General pets: no microchip mandate. Potentially dangerous animal permit: microchip required. Pit bull breed-restricted permit: microchip required. Cat license tag: waived if microchipped. Enforcing agency: Denver Animal Protection.
Failing to microchip means the potentially dangerous animal or pit bull permit cannot be issued or maintained; keeping the animal without a valid permit is a separate unlawful-possession violation enforced by Denver Animal Protection.
Chickens & Livestock
Denver requires a livestock or fowl permit for any chickens, ducks, goats, or other livestock; a restricted license allows up to eight chickens or ducks combined and two goats, with roosters and intact male goats banned.
Key details: Permit authority: Executive director, Dept. of Public Health. Restricted license limit: 8 chickens/ducks combined, 2 goats max. Space required: 16 sq ft per bird, 130 per goat. Prohibited animals: Roosters and intact male goats over 6 weeks.
Keeping livestock or fowl without a permit is a public nuisance violation; the executive director can deny or revoke permits for unsanitary conditions, odors, excessive noise, or nuisance complaints.
This is not one of those rules that cities tend to ignore. Denver actively enforces its chickens & livestock requirements.
Pet Limits
Denver does not have a standalone hoarding ordinance, but DRMC chapter 8 pet limits combined with Colorado C.R.S. 18-9-202 cruelty to animals reach hoarding cases. Denver Animal Protection investigates with police support and may seize animals.
Key details: City code: DRMC chapter 8. State statute: C.R.S. 18-9-202. Lead agency: Denver Animal Protection. Felony trigger: Aggravated cruelty repeat.
Animal cruelty under C.R.S. 18-9-202 is a class 1 misdemeanor with up to 364 days jail and $1,000 fine for first offense; aggravated cruelty or repeated hoarding can become a class 6 felony with prison time.
Compared to other cities, Denver takes a harder line on pet limits. The enforcement and penalty structure reflects that.
Pet Store Rules
Denver pet shops cannot sell, deliver, barter, or otherwise dispose of a dog, cat, or rabbit. Retail sales are banned outright: stores may only host approved animal adoption or humane organizations to place animals on-site.
Key details: Dog/cat/rabbit retail sale: Banned in pet shops. Adoption-org exception: Allowed on-site with signage. Max fine: $999 per offense. Max jail: 300 days. Enforcing agency: Dept. of Excise and Licenses.
Violating § 8-104 is a general Code offense: up to a $999 fine, up to 300 days in jail, or both, under § 1-13, plus possible license action by Excise and Licenses.
Compared to other cities, Denver takes a harder line on pet store rules. The enforcement and penalty structure reflects that.
Veterinary Clinic Zoning
Denver's zoning code classifies veterinary practices into two separate use types: clinics serving only household or domestic pets, and full-service operations that also treat, board, or kennel other animals.
Key details: Use category: Retail Sales, Service & Repair. Household Pets Only type: Vet care limited to household or domestic pets. All Others type: Adds boarding, breeding, kennels for any animal. Kennel threshold: 4+ dogs or 6+ cats triggers boarding use. Enforcement: DZC 12.11.2.1; DRMC 1-13 general penalty.
Operating a use inconsistent with its zoning classification, or without required approval, is a violation under DZC 12.11.2.1; each day counts as a separate offense.
Dog Leash Laws
Denver dog owners must prevent their dog from running at large; violators can be impounded, with an exception for supervised off-leash enclosures.
Key details: Governing rule: Must prevent dog from running at large. Enforcement: Impoundment at Denver Animal Shelter. Exception: Designated off-leash enclosures. Supervisor age: 18 or older required. Code section: DRMC § 8-16.
Dogs found running at large may be impounded on the spot by police or animal protection officers, with no complaint required; owners face standard chapter 8 citation and impoundment/disposal procedures under Article VII.
Breed Restrictions
Denver bans owning or keeping a pit bull without a breed-restricted permit from Denver Animal Protection, capping households at two permitted pit bulls and requiring microchipping, rabies proof, and incident reporting.
Key details: Permit required: Breed-restricted permit from Denver Animal Protection. Household limit: Max two pit bulls per household. Renewal: Annual renewal required. Sunset: 36 clean months lifts requirement. Citation: DRMC § 8-67.
Owning an unpermitted pit bull, exceeding the two-dog household cap, or missing required incident notifications violates chapter 8, enforced by Denver Animal Protection and the county court under Sec. 1-13, with possible removal of the animal from the city.
This is one of the stricter rules in Denver's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.
Exotic Pets
Denver outlaws owning, keeping, or selling venomous reptiles, monitor lizards, large snakes, crocodilians, venomous spiders, scorpions, and nearly all non-domestic mammals within city limits, with only narrow exemptions for approved organizations.
Key details: Prohibited category: Any living wild or hazardous animal. Named bans: Venomous reptiles, large snakes, crocodilians, scorpions. Enforcing agency: Denver Animal Protection. Governing section: Denver Revised Municipal Code § 8-72. Exempted pets: Cats, dogs, ferrets, chinchillas, hamsters, rabbits.
Keeping a prohibited wild or hazardous animal is enforced by Denver Animal Protection under the Code's general penalty provision (Sec. 1-13); the department can seize the animal and cite the owner into Denver County Court.
Compared to other cities, Denver takes a harder line on exotic pets. The enforcement and penalty structure reflects that.
Beekeeping
Denver limits residential lots to two honeybee hives, set in the rear third of the yard with a 5-foot setback from side and rear lines and a 6-foot screening barrier bees must clear before leaving the property.
Key details: Hive limit: 2 hives per zone lot. Setback: 5 ft from side and rear lot lines. Screening: 6 ft barrier bees must clear. Location: Rear third of the zone lot. Storage: No outdoor bee equipment storage.
Hives beyond the two-per-lot limit, missing the setback or 6-foot screening, or outdoor equipment storage violate the zoning code's accessory-use standards and can draw a zoning enforcement order from the Zoning Administrator.
The Bottom Line
Denver is tougher than many cities when it comes to animal ordinances. Out of the 11 rules covered here, 6 are rated strict. If you are a homeowner, renter, or business owner in Denver, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.
This guide is based on Denver's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.