Warren, MI Animal Ordinances: Microchipping (2026)

City Code Sec. 7-93(a)(3) requires that a potentially dangerous dog have a microchip implanted by a licensed veterinarian before the dog can be returned to its owner. The chip must contain the dog's name and approximate age, its classification as potentially dangerous, and the name, address, and telephone number of the registered owner. Sec. 7-93(b)(2) reinforces this at registration: before the dog returns to any property in the city, the owner must register with the city clerk and provide proof of microchipping along with the information contained on the chip, and must keep that microchip information updated with the city going forward.

This microchip mandate applies specifically to dogs adjudicated potentially dangerous under Sec. 7-92, not to pet dogs or cats generally; Warren's code does not impose a blanket microchipping requirement on all animals. A visiting dog from another community that is found potentially dangerous while in Warren must also be microchipped before release under Sec. 7-93(f), with the owner bearing the microchipping cost. Both provisions were enacted under Ord. No. 80-834, effective June 24, 2025.