Brentwood enforces Contra Costa County's behavior-based dangerous and vicious dog ordinance through Animal Services. Any dog that bites, attacks, or threatens a person or animal can be declared Potentially Dangerous or Vicious, triggering mandatory containment, muzzle, insurance, and microchip requirements. California law preempts breed-specific bans.
Dangerous dog enforcement in Brentwood follows Contra Costa County Code Title 4 and California Food & Agricultural Code §31601-31683. A dog can be declared "Potentially Dangerous" after unprovoked aggressive behavior or a minor bite, and "Vicious" after inflicting severe injury, killing another animal, or a prior Potentially Dangerous designation combined with another incident. Consequences include mandatory secure enclosure (6-ft fence with locked gate), muzzle and short leash in public, liability insurance (commonly $100,000+), microchip, sterilization, and annual dangerous-dog fees (~$100+). A Vicious declaration can result in destruction of the dog if public safety cannot be assured. California Food & Agricultural Code §31683 preempts all local breed-specific legislation, so Brentwood cannot and does not ban any breed. All dangerous-dog designations are based strictly on individual animal behavior, determined through an administrative hearing conducted by CCAS.
Contact your local code enforcement office for specific penalty information.
Brentwood, CA
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Side-by-side rule comparisons with other cities in Contra Costa County.
See how other cities in Contra Costa County handle breed restrictions.
See how Brentwood's breed restrictions rules stack up against other locations.
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