NC H271

Establishes three categories of dogs: "at-risk dogs" (exhibit minor aggressive behavior), "dangerous dogs" (inflict serious injuries or approach people in threatening manner), and "vicious dogs" (kill/severely injure people or previously determined dangerous dogs that reoffend).

Creates new procedures for at-risk dogs requiring owners to complete behavior training programs, with infraction penalties and possible reclassification to dangerous dog status upon second incident within 24 months.

Increases criminal penalties for vicious dog attacks to Class I felony for serious injury and Class F felony for fatalities, while dangerous dog attacks causing injuries over $1,000 are Class 1 misdemeanor.

Requires owners of vicious dogs to register them, sterilize them, and prohibits individuals under 18 from owning vicious dogs; mandates warning signs be posted within 30 days.

Prohibits local breed-specific regulations, allowing only behavior-based dangerous dog ordinances; effective December 1, 2015.