Pima County, which licenses dogs for Tucson, requires every licensed dog to be implanted with a microchip and registered to the owner. The chip number is tied to the rabies certificate and the county license record.
Pima County Code Title 6 and PACC licensing rules require that every dog three months or older be licensed annually and microchipped. The chip is implanted by a veterinarian or at PACC and the unique number is registered with the county license, paired with the current rabies vaccination. When a stray is impounded, PACC scans it and contacts the chip registrant before classifying the animal as unowned. Tucson does not have a separate city microchip ordinance; instead it relies on the county system because PACC handles enforcement, licensing, and stray response within city limits.
Failing to license a microchip-eligible dog, or failing to keep registry contact info current, can result in citations, longer impound holds, and reclaim fees from PACC.
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