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Stanislaus County, CA Animal Ordinances: Microchipping (2026)

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

Key Facts

Adopted pets
Microchipped before shelter release
Reclaimed pets
Chipped if no current ID/license
Bite animals
Chipped regardless of license status
Cost
Owner pays before release
Litter permit tie-in
Breeding animal must be chipped

Summary

Every dog and cat adopted from the county shelter must be microchipped by SASA before leaving. Reclaimed pets that show up at the shelter without a current license or other permanent ID get chipped too, and any animal identified as a prior "bite dog" or "bite cat" is chipped regardless of license status.

City-specific rules exist: Modesto has its own microchipping rules that differ from Stanislaus County's county-level regulations. If you live in Modesto, check the city-specific page instead.

All dogs and cats adopted from the animal shelter shall be implanted, prior to the animal leaving the animal shelter, with a microchip provided by SASA. The microchip identification number shall be maintained on file at the animal shelter for identification purposes. Any dog or cat impounded under authority of this chapter, which has no current license or any other visible means of permanent identification shall be, upon identification and reclaim by its owner, implanted with a microchip provided by SASA. In addition, any dog or cat that has been identified by SASA as a "bite dog" or "bite cat" (a dog or cat which has previously bitten a person or another animal) will be implanted with a microchip provided by SASA, regardless of whether the dog or cat has been licensed or not.

Full Breakdown

170 requires SASA to implant a microchip in every dog and cat adopted from the animal shelter before the animal leaves, with the identification number kept on file at the shelter. 32 that has no current license or other visible permanent identification must be implanted with a microchip once the owner identifies and reclaims it. The rule reaches further for animals SASA has flagged as a "bite dog" or "bite cat", one that has previously bitten a person or another animal, which must be microchipped on reclaim regardless of whether it was ever licensed.

The cost of the microchip and the implantation service is set by board of supervisors ordinance and must be paid by the owner before the animal is released from the shelter, meaning the practical enforcement mechanism is a hold on release rather than a separate citation. The identification number goes on file at the shelter either way, giving SASA a lasting record tied to the animal independent of tag or license renewal. 030(D)(7): anyone who obtains a permit to breed a dog or cat must have that animal licensed and microchipped with SASA as a condition of the permit.

Violations & Fines

There's no separate infraction for skipping this step because SASA enforces it at the point of release: a reclaimed dog or cat without a current license or ID isn't returned to its owner until it's microchipped and the owner has paid the implantation fee set by the board of supervisors. A litter permit holder who fails to microchip a breeding animal also risks permit revocation.

Frequently Asked Questions

Is microchipping mandatory for all pets in Stanislaus County?
It's mandatory at two specific points: every dog or cat adopted from the county shelter is chipped before release under Section 7.32.170, and any impounded dog or cat reclaimed without a current license or visible ID is chipped under Section 7.32.180.
Who pays for the microchip?
The owner. Section 7.32.180 says the cost of the microchip and the implantation service, set by board of supervisors ordinance, is paid by the animal's owner before SASA releases the animal from the shelter.
What if my dog has bitten someone before?
Section 7.32.180 requires SASA to microchip any dog or cat it has identified as a 'bite dog' or 'bite cat' when it's reclaimed, regardless of whether the animal was ever licensed.

Sources & Official References

Other rules in Stanislaus County

All Stanislaus County rules

California rules heatmap·Compare Stanislaus County to another location·View the California animal ordinances overview

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