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Solano County, CA Animal Ordinances: Breed Restrictions (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified June 2026

Key Facts

Breed ban in county code
None
Regulation basis
Animal behavior, not breed (Ch. 4, Art. IV)
State limit
CA Food & Ag Code sec. 31683 bars breed-specific dog programs
Narrow exception
Spay/neuter or breeding only (Health & Safety Code 122331)
Applies to
All breeds equally

Summary

Solano County's animal code (Chapter 4) contains no breed-specific ban or restriction. Dangerous and vicious animals are regulated by behavior, not by breed. Under California Food and Agricultural Code section 31683, local dog-control programs cannot be breed-specific, except for spay/neuter or breeding programs allowed by Health and Safety Code section 122331.

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

(a) A person who owns or keeps an animal and who allows, permits or causes the animal to be at large in or upon a public street, sidewalk, park, or other public property or in or upon the premises or private property of another person, shall be guilty of a misdemeanor if the animal bites, attacks or causes injury to any human being or other animal. (b) Any person convicted under this section shall not own or keep the type of animal which caused the bite, attack or injury for a three (3) year period after the date of conviction.

View official code

Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 1868, passed April 9, 2026).

Full Breakdown

There is no breed-specific legislation in unincorporated Solano County. Chapter 4 of the County Code, including Article IV on Dangerous Animals, regulates animals based on conduct - whether an animal has bitten, attacked, injured, or threatened a person or another animal - and not on breed. The definitions of 'dangerous animal,' 'potentially dangerous animal,' and 'vicious animal' in sections 4-11 and 4-50 turn entirely on the animal's behavior and the owner's knowledge, with no mention of pit bulls, Rottweilers, or any specific breed. California law constrains what counties may do here: Food and Agricultural Code section 31683 provides that, except as allowed by Health and Safety Code section 122331, no program regulating dogs may be specific as to breed.

The narrow exception in section 122331 permits a city or county to adopt breed-specific requirements only for mandatory spay/neuter or breeding programs - not for ownership bans. Solano County has not been identified as having adopted such a breed-specific spay/neuter ordinance in Chapter 4. As a result, owners of any breed are subject to the same dangerous-animal and licensing rules, applied according to the individual animal's behavior.

Violations & Fines

Because regulation is behavior-based, enforcement follows the dangerous-animal process: an animal that bites, attacks, or injures may be declared potentially dangerous or dangerous after a hearing (sections 4-52 through 4-55) and made subject to conditions such as secure confinement, muzzling, microchipping, liability insurance, and spay/neuter, or ordered destroyed - regardless of breed.

Frequently Asked Questions

Are pit bulls or other specific breeds banned in unincorporated Solano County?
No. Solano County Code Chapter 4 contains no breed-specific ban. Dangerous and vicious animals are defined by behavior, not breed. California Food and Agricultural Code section 31683 also prohibits breed-specific dog-control programs, except for spay/neuter or breeding requirements permitted under Health and Safety Code section 122331.
Can the county still regulate my dog if it is aggressive?
Yes. Under Chapter 4, Article IV, any dog of any breed that bites, attacks, or injures a person or animal can be declared potentially dangerous or dangerous after a hearing and subjected to confinement, muzzling, insurance, microchipping, spay/neuter, or destruction. The rules apply based on conduct, not breed.

Sources & Official References

Other rules in Solano County

All Solano County rules

How Solano County compares: Cities with No Dog Breed Restrictions·California rules heatmap·Compare Solano County to another location·View the California animal ordinances overview

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Breed Restrictions in Cities Across Solano County