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Warren, MI Animal Ordinances: Mandatory Spay/Neuter (2026)

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

Key Facts

Trigger
Court finding of potentially dangerous dog
Rule
Spay/neuter required if dog over 12 weeks
General pets
No citywide spay/neuter mandate
Penalty for noncompliance
Up to 90 days jail, $500 fine
Adopted
Ord. No. 80-834, June 24, 2025

Summary

Warren does not require spay/neuter for pets generally, but a dog judicially found potentially dangerous must be spayed or neutered, if over 12 weeks old, before it can be returned to its owner. This sits among several conditions in the city's potentially-dangerous-dog registration process.

(7)The potentially dangerous dog, if over twelve (12) weeks old, has been spayed or neutered.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 102).

Full Breakdown

City Code Sec. 7-93(a) lists the requirements a potentially dangerous dog must meet before it can be returned to its owner after a court determination under Sec. 7-92. Subsection (a)(7) specifically requires that the potentially dangerous dog, if over 12 weeks old, has been spayed or neutered; this sits alongside secure fencing with self-locking gates and a warning sign (a)(1), a four-foot maximum leash when off-property (a)(2), mandatory microchipping (a)(3), $250,000 minimum liability insurance (a)(4), current photographs (a)(5), and completion of the AKC Canine Good Citizen program or equivalent (a)(6).

Warren has no general spay/neuter mandate for ordinary pet dogs or cats; this requirement is triggered only after a dog has been adjudicated potentially dangerous by the 37th District Court under Sec. 7-92(c). Before the dog can return to any city property, the owner must also register it with the city clerk and provide proof that all Sec. 7-93(a) requirements, including the spay/neuter condition, have been satisfied, per Sec. 7-93(b). Failing to meet any Sec. 7-93(a) requirement, including the spay/neuter condition, is a misdemeanor. The provision was adopted under Ord. No. 80-834, effective June 24, 2025.

Violations & Fines

Possessing or harboring a potentially dangerous dog in violation of any Sec. 7-93 requirement, including the spay/neuter mandate in (a)(7), is a misdemeanor punishable by up to 90 days in jail and/or fines and costs up to $500 under Sec. 7-93(g)(1); a court may waive or reduce the fine only for financial hardship if the owner forfeits ownership rights and completes required education.

Frequently Asked Questions

Does Warren require all dogs to be spayed or neutered?
No. Warren has no general spay/neuter requirement for pet dogs or cats. The mandate only applies under Sec. 7-93(a)(7) to a dog the 37th District Court has formally determined to be potentially dangerous, and only if the dog is over 12 weeks old.
What triggers the spay/neuter requirement in Warren?
A judicial determination under Sec. 7-92 that a dog is potentially dangerous triggers Sec. 7-93(a)(7), requiring the dog be spayed or neutered, along with secure fencing, microchipping, insurance, and behavior training, before it can be returned to the owner.
What happens if a potentially dangerous dog's owner doesn't get it spayed or neutered?
The dog cannot be returned to the owner until the requirement is met, and knowingly possessing the dog in violation of Sec. 7-93 is a misdemeanor punishable by up to 90 days in jail and/or fines and costs up to $500 under Sec. 7-93(g)(1).

Sources & Official References

Other rules in Warren

All Warren rules

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