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Aurora, CO Animal Ordinances: Microchipping (2026)

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

Key Facts

Applies to
Court-declared dangerous animals only
Deadline
10 calendar days of determination
Enforcing agency
Aurora Animal Services Division
Ordinary pets
No citywide microchip requirement
Citation
Aurora City Code § 14-7(h)(9)

Summary

Aurora, Colorado has no citywide microchip mandate for ordinary pets. Microchipping becomes mandatory only after a municipal court declares an animal dangerous: the owner then has 10 days to chip it and register the number.

(9) Microchip. All owners of dangerous animals shall microchip the dangerous animal within 10 calendar days of a determination the animal is dangerous and provide the microchip information to the Aurora animal services division to register the animal as dangerous; and

Source: Aurora Animal ServicesView official code

Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 2026-30, passed June 22, 2026).

Full Breakdown

Aurora City Code § 14-7(h) lists the conditions a municipal court attaches when releasing a declared dangerous animal to its owner. Subsection (h)(9) requires the owner to microchip the dangerous animal within 10 calendar days of the dangerous determination and give the microchip information to the Aurora Animal Services Division so the animal can be registered as dangerous. The division also collects the microchip number on the dangerous-animal permit application itself, under § 14-7(j)(5). By contrast, Aurora's general pet-licensing law at § 14-41 requires only a city license tag on the collar, no chip, for ordinary dogs and cats. The rule applies citywide, across the Arapahoe, Adams and Douglas County portions of Aurora alike, current through Ordinance 2026-17.

Violations & Fines

Missing the 10-day microchip deadline, or failing to give the chip number to Aurora Animal Services, is its own offense under § 14-7(h)(13), triggering municipal-court penalties under § 1-13 and possible revocation of the dangerous-animal permit with surrender of the animal.

Frequently Asked Questions

Does Aurora require microchipping all pets?
No. Aurora's general license law (§ 14-41) requires only a city tag. A microchip is mandatory only once a municipal court has declared the animal dangerous, per § 14-7(h)(9).
What if I miss the 10-day microchip deadline?
It's a separate violation under § 14-7(h)(13). The court can revoke the dangerous-animal permit and order the animal surrendered to Aurora Animal Services.

Sources & Official References

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All Aurora rules

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