The bill amends Chapter 4-13.1 of the General Laws, changing the title from "Regulation of Vicious Dogs" to "Regulation of Dangerous Dogs," reflecting a broader focus on dogs deemed dangerous. It introduces new legal language emphasizing the threat posed by dangerous dogs to public safety and welfare, and clarifies that owning a dog declared dangerous without adhering to restrictions constitutes a nuisance. The bill provides a detailed definition of a "dangerous dog," outlines circumstances under which a dog cannot be declared dangerous, and updates definitions related to dog officers, domestic animals, and enclosures. Key insertions include requirements for dog owners to maintain liability insurance, microchip their dogs, and display warning signs on their premises.

Additionally, the bill establishes penalties for non-compliance with regulations, including fines and potential euthanization of dangerous dogs that escape or attack. It modifies the process for hearings to determine if a dog is dangerous, streamlining procedures while allowing owners to contest decisions. The bill also holds parents or guardians liable for damages caused by a dangerous dog owned by a minor and allows for civil actions to collect unpaid fines. Overall, the amendments aim to enhance public safety and ensure responsible ownership of dogs classified as dangerous, with provisions for enforcement and compliance.