Buster's Law was signed into law in New York in 1999 in response to the brutal abuse and killing of a dog named Buster. The law made aggravated cruelty to animals a felony offense. It defined aggravated cruelty as intentionally causing serious physical injury or death to an animal with extreme physical pain or in an especially depraved or sadistic manner. At the time, only 17 states had felony animal cruelty laws, but as of 2015, all 50 states had adopted some felony provisions regarding animal cruelty and animal fighting. The passage of Buster's Law helped spur more states to strengthen penalties for animal abuse.