Sourland- I don't know. I know the random male cat that likes to hang around here has to be at least 7 or 8 years old. He too is very street wise. I never see him in the street when cars are near. There is another feral tom that sneaks up sometimes. I rarely see him though and he is quite scary. He's been here since I moved in 4 years ago. Around here they have to dodge cars and coyotes both, so I wouldn't think they have a terribly long lifespan.