Waterloo, IA Animal Ordinances: Breed Restrictions (2026)

Waterloo does not list restricted breeds. Instead, City Code article B of the animal control chapter (sections 5-1B-1 through 5-1B-12) lets animal control classify any dog, regardless of breed, as a regulated dog, meaning potentially dangerous, dangerous or vicious, after an unprovoked bite or attack. Under section 5-1A-6B, once a dog attacks or menaces, animal control decides whether to charge the owner and, if so, classifies the dog under article B and issues written notice. Section 5-1B-5B then bans keeping, sheltering or harboring a regulated dog in the city unless the owner registers it under section 5-1B-7: paying a registration fee set by council resolution, providing at least $300,000.00 in liability insurance, keeping proof of current rabies vaccination and city license, and confining the dog in a locked pen or structure at least six feet wide, twelve feet long and six feet high with solid flooring, or securely indoors.

A dog registered as potentially dangerous or dangerous that repeats the behavior twice in twelve months is automatically escalated to dangerous, and a registered dog that later kills or causes serious injury is automatically escalated to vicious. Owners must also notify animal control within 48 hours of the dog's death, sale or relocation, and within 14 days of any address change. A regulated dog found at large and creating a hazard may be destroyed at the animal control officer's discretion without a duty to attempt capture.

Any classification, registration denial or removal order can be appealed to the city council within 7 days under section 5-1-13. Failing to register, or keeping a regulated dog without complying, is punishable as a municipal infraction under section 5-1B-12, in addition to seizure and impoundment fee liability.