Boulder County has no breed-specific dog ban. Colorado state law (C.R.S. 18-9-204.5) regulates dangerous dogs by behavior, not breed, and C.R.S. 18-9-204.5(5)(b) bars any local regulation that is specific as to breed. The county handles risky dogs through its vicious-dog process.
No pit bull, Rottweiler, or other breed is banned in unincorporated Boulder County. Colorado's dangerous-dog statute, C.R.S. 18-9-204.5, is conduct-based, and its home-rule clause prohibits local governments from adopting breed-specific dog laws (with a narrow exception for home-rule cities' own regulations). Boulder County instead uses Ordinance 2022-8, Section 7 (Vicious Dogs Running at Large): a 'vicious dog' is one that has bitten or attempted to bite a person without provocation, or bitten a domestic or wild animal unprovoked, even on the first bite. A vicious dog off-premises must be under leash control. The ordinance expressly preserves the state dangerous-dog statute.
There is no breed offense to cite. A dog is handled by behavior: letting a vicious dog off-premises without leash control, or allowing it to chase or attack, is a petty offense under Ordinance 2022-8, Section 7. Serious cases fall
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