Thanks to Deb for this info!
Pawtucket does require that Rottweilers be registered and the owner carry no less than $25,000 worth of liability insurance:
A. Any owner or keeper having the ownership, custody or control of any dog known to the owner or keeper as, or identified as, a Rottweiler; or any dog exhibiting those distinguishing characteristics which substantially conform to the standards established by the American Kennel Club or United Kennel Club for this breed, the characteristics being identifiable even if there are technical deficiencies in any particular dog's conformance thereto; or any dog identifiable by a licensed veterinarian, animal control officer or any other knowledgeable person whose identification is deemed credible by the Public Safety Director and the Animal Control Officer as having Rottweiler as the major element of its breeding, must register said dog with the City Clerk on a form to be provided by the City. Said form shall require the following information: name, address and telephone number of the dog's owner or keeper; dog's sex, color, rabies certificate and tag number and other distinguishing physical characteristics of the dog, as well as proof of liability insurance of not less than $25,000 for each such registration. The fee for registration shall be $12.