Greyhound adoption was started by the greyhound industry in the late 1970s. Greyhound Pets of America (GPA) was established in 1987 for the purpose of finding homes for ex-racing greyhounds, and educating the public on the suitability and availability of greyhounds as pets. GPA is the largest non-profit greyhound adoption group. Since its creation GPA has adopted out over 65,000 greyhounds. In 1989 David Wolf founded the National Greyhound Adoption Program (NGAP) mostly with his own resources. He has become the most controversial figure in the greyhound adoption community, and is one of the most outspoken critics of the greyhound racing industry. The Greyhound Project maintains a directory of hundreds of greyhound adoption agencies throughout the world.