Very little is known about P-11. First captured in the winter of 2008 (a few days after P-10, actually), the collar on this young male stopped working several months later. He was never found again, nor his presence detected. It’s presumed that he died. Genetic testing showed that he was yet another son of male P-1, though the mother in this case has never been identified. P-1 and that unknown mother produced at least four other known males: P-14, P-15, P20, and the famous Griffith Park cougar, P-22.