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Adams County, CO Animal Ordinances: Breed Restrictions (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing section
Animal Control Code § 5-6
Injury/damage threshold
Restitution over $1,000 required
Breed-specific ban
None; behavior-based standard only
Max penalty
$300 fine, 10 days jail, or both
Enforcing agency
Adams County Animal Management / Riverdale Animal Shelter
State definition referenced
C.R.S. § 18-9-204.5
Court
Adams County Court, 17th Judicial District

Summary

Unincorporated Adams County has no breed-specific ban. Its Animal Control Code regulates dogs by documented behavior instead: Section 5-6 makes it unlawful to own, harbor, keep, or control a dangerous dog that causes bodily injury, serious bodily injury, death of an animal, or property damage carrying restitution of more than $1,000, tracking the state definition at C.R.S. § 18-9-204.5.

City-specific rules exist: Westminster, and Thornton have their own breed restrictions rules that differ from Adams County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

5-6. Dangerous dog (unlawful ownership), Damages/destroys property of another, Bodily injury to person, Serious bodily injury to person, Injury/death to an animal is prohibited. It shall be unlawful for any person to unlawfully, own, possess, harbor, keep, have a financial/property interest in, have custody/control over a dangerous dog and said dog cause bodily injury to a person, serious bodily injury to a person, injury/death of a domestic animal, or damage/destruction of property of another. This violation applies only to damages and injuries resulting in restitution of more than one thousand dollars ($1,000).

Full Breakdown

5. Section 5-6 then makes it unlawful for any person to own, possess, harbor, keep, hold a financial or property interest in, or exercise custody or control over a dangerous dog that causes bodily injury, serious bodily injury, or death to a person or domestic animal, or destroys property of another, but the violation applies only where the damages or injuries carry restitution of more than one thousand dollars. § 18-3-201(2) for purposes of assaults against them. 5, Section 7-4 lets the county take the dog into custody and hold it at the owner's expense at a public shelter, licensed boarding facility, or veterinary clinic pending the outcome of the case, and a court may make that placement a condition of bond.

Section 8-1 confirms that nothing in the state dangerous-dog statute strips Adams County of its separate authority to license and regulate animals. There is no muzzle, insurance, sign-posting, or breed-based registration requirement anywhere in the Code; ownership only becomes unlawful once the $1,000 injury or damage threshold in Section 5-6 is met.

Violations & Fines

Violating Section 5-6 is a petty offense under Section 6-1, punishable by a fine of up to $300, up to 10 days in the county jail, or both, for each separate offense. A summons and complaint under Section 6-6 must identify the sections violated and the fine owed, with a duplicate sent to the County Court Clerk of the 17th Judicial District; contesting it under Section 6-8 requires a court appearance.

Frequently Asked Questions

Does Adams County ban pit bulls or other breeds?
No. The unincorporated county's Animal Control Code contains no breed list or breed ban. Section 5-6 and the Article I definition of 'vicious or dangerous animal' both regulate dogs by documented behavior, incorporating the state's dangerous-dog definition at C.R.S. § 18-9-204.5 rather than naming any breed.
What makes a dog 'dangerous' under county law?
Under Article I, a dog qualifies if it has injured or killed a person, another animal, or livestock; has shown tendencies a reasonable person would believe could cause such injury; has been trained for animal fighting under C.R.S. § 18-9-204; or meets the state's dangerous-dog definition in C.R.S. § 18-9-204.5.
What happens to a dog after a bite that leads to a summons?
Once a summons issues under C.R.S. § 18-9-202.5, Section 7-4 lets Adams County take the dog into custody and hold it at a public shelter, licensed boarding facility, or veterinary clinic at the owner's expense, and a judge can make that placement a bond condition pending the case's outcome.
What is the penalty for unlawfully owning a dangerous dog?
Section 6-1 makes any Animal Control Code violation a petty offense punishable by up to $300 in fines, up to 10 days in the county jail, or both, per offense, but Section 5-6 only applies once a dangerous dog causes injury or property damage carrying restitution above $1,000.

Sources & Official References

Other rules in Adams County

All Adams County rules

How Adams County compares: Cities with No Dog Breed Restrictions·Compare Adams County to another location·View the Colorado animal ordinances overview

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