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Colorado Statewide Rule

Colorado Breed-Specific Legislation Preemption Repealed

Some RestrictionsApplies statewide across Colorado (2026)

Key Facts

State Statute
C.R.S. 18-9-204.5(5)(b)
Key Case
Dog Fanciers v. Denver 1991
Home Rule Effect
Cities retain authority
Denver Status
Ban repealed 2020

Summary

Colorado initially preempted breed-specific bans but the Court of Appeals upheld home-rule authority. Currently, Colorado municipalities may enact or repeal breed restrictions independently.

(5) (a) Nothing in this section shall be construed to prohibit a municipality from adopting any rule or law for the control of dangerous dogs; except that any such rule or law shall not regulate dangerous dogs in a manner that is specific to breed. (b) Nothing in this section shall be construed to abrogate a county's authority under part 1 of article 15 of title 30, C.R.S., to adopt dog control and licensing resolutions and to impose the penalties set forth in section 30-15-102, C.R.S.; except that any such resolution shall not regulate dangerous dogs in a manner that is specific to breed.

Source: C.R.S. 18-9-204.5 - Unlawful ownership of dangerous dogView official code

Full Breakdown

C.R.S. 18-9-204.5(5)(b) attempted to prohibit breed-specific dangerous dog designations, but Colorado Dog Fanciers v. Denver (1991) and subsequent rulings affirmed that home-rule cities like Denver and Aurora retain authority to enact breed bans. Denver repealed its pit bull ban in 2020. The state statute applies only to dangerous dog adjudications, not breed-based ownership restrictions. Statutory cities follow state defaults; home-rule municipalities set their own policies.

Violations & Penalties

Where local breed bans exist, violations result in seizure, fines $100-$1,000, and possible euthanasia of unregistered restricted breeds.

Frequently Asked Questions

Does Colorado state law ban breed-specific legislation?
Only for state-level dangerous dog determinations. Home-rule cities may still enact breed-specific ordinances under their constitutional authority over local matters.
Are pit bulls legal in Colorado?
Generally yes statewide, but check local ordinances. Some Colorado cities historically restricted pit bulls, though most major cities including Denver have repealed such bans.

Sources

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