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Carroll County, MD Animal Ordinances: Microchipping (2026)

Light Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Trigger
Vicious determination, appeals exhausted
Deadline to microchip
10 days
Who performs it
Licensed veterinarian
Data recipient
Animal Care and Control Authority
Transfer duty
Written notice to Authority and buyer

Summary

Carroll County doesn't require microchips for every pet, but once the Animal Care and Control Authority declares an animal vicious and appeals run out, the owner must have it microchipped within ten days and hand over the chip data.

These county ordinances apply to unincorporated areas of Carroll County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Upon determination by the Animal Care and Control Authority that an animal is vicious and after the exhaustion of any appeals, the owner shall have the animal microchipped for permanent identification by a licensed veterinarian within ten days and the corresponding microchip data shall be given to the Animal Care and Control Authority.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-15: Supplement contains: Local legislation current through July 30, 2026).

Full Breakdown

08(A), the vicious-animal statute, not a stand-alone pet-identification rule. 15, so an owner who appeals a vicious determination doesn't have to chip the animal until that appeal is resolved against them. The same subsection adds an ongoing disclosure duty: if the owner later sells or gives away an animal that has been determined vicious or potentially dangerous, the owner must notify the Authority in writing with the new owner's name and address, and must tell that new owner in writing about the animal's vicious history.

02, ties dog identification to a numbered tag on the collar, not a chip, so microchipping in Carroll County is specifically an aftermath of a vicious determination rather than a universal pet requirement.

Violations & Fines

Failing to microchip a declared vicious animal within the ten-day window, or failing to give written notice to the Authority and a new owner before transferring it, is enforceable as a Chapter 90 violation under § 90.99: up to 30 days in the county jail, a fine of up to $500, or both, with continuing noncompliance counted as a separate violation each day.

Frequently Asked Questions

Does Carroll County require every pet to be microchipped?
No. The microchip requirement in § 90.08(A) applies only after the Animal Care and Control Authority determines an animal is vicious and any appeals under § 90.15 are exhausted; there is no general microchip mandate for ordinary pets.
How long do I have to microchip a dog declared vicious?
Ten days from the exhaustion of any appeal, per § 90.08(A), and the chipping must be done by a licensed veterinarian, with the chip data reported to the Animal Care and Control Authority.
Do I have to tell a new owner if I give away a vicious dog?
Yes. Section 90.08(A) requires written notice to the Authority naming the new owner and address, and written notice to the new owner disclosing the animal's vicious or potentially dangerous determination.
What if I don't microchip my vicious animal in time?
It's enforced as a Chapter 90 violation under § 90.99, punishable by up to 30 days in jail, a $500 fine, or both, with each additional day of noncompliance treated as a separate offense.

Sources & Official References

Other rules in Carroll County

All Carroll County rules

Compare Carroll County to another location·View the Maryland animal ordinances overview

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