Research overview: P-22, the Griffith Park mountain lion

P-22 was a male puma collared by the National Park Service after he made an improbable journey across two of Los Angeles's busiest freeways, the 405 and the 101, to settle in tiny Griffith Park beside the Hollywood sign. This overview describes how his GPS-collared movements documented a big cat persisting for years in one of the smallest home ranges ever recorded for the species, hemmed in by urban development. His story became a global symbol of wildlife in cities and a catalyst for the wildlife crossing built over the 101. The overview covers what his telemetry revealed about urban puma ecology, the genetic isolation of the Santa Monica population, and the conservation movement his life and death helped inspire.