Poco Bueno has been identified as the sireline associated with the brutal affliction known as hyperelastosis cutis (HC) or hereditary equine regional dermal asthenia (HERDA). He was a giant among horses. Built like a rock, he possessed power and speed. He made his mark in the show ring as a champion, then retired to the breeding shed. His greatness was carried on through his get, grandget, and on down the line through succeeding generations of Quarter Horses.