. >> whitaker: the gps signals from their collars tell sikich and his colleague seth riley where the animals roam. p-22 wanders the hills of griffith park, a small enclave in los angeles frequented by hikers and visitors to the park's famed observatory. >> seth riley: we haven't-- knock on wood-- had any major conflicts with him and people. and it shows that even a large carnivore like a mountain lion can live right among people for many years. >> whitaker: they think p-22 migrated east across the santa monica mountains for 20 miles or so, perhaps chased out by a bigger male. he somehow crossed the 405 freeway, one of the world's busiest, worked his way through bel air and beverly hills, and bowl amphitheater, crossed a second busy freeway, the 101, to griffith park. >> sikich: p-22 had it great. no competition. no other adult males in griffith park. seemed to be plenty of prey for him. >> whitaker: he's been in griffith park for three years now-- all alone, looking for love in all the wrong places. >> sikich: yeah, you know, still hanging out there, which is pretty surprising. i wou