Was at the DEC office in New Paltz, NY today getting a bobcat sealed, spoke to one biologist who swore there is no self sustaining population of lion here in NY. He says there is a decent black market of cougar as pets, and thinks after they get too big to handle, people release them. But they can't survive in the wild.
I am leaning toward there being a breeding population, but am not convinced so yet.
Though I did cut a large cat track on a frozen lake in a really remote area 2 years ago and it was'nt a bobcat! Just wish I had a camera at the time.