Check out this blog:
https://nhmountainlion.wordpress.com
Some interesting sighting posts, along with photos that are either questionable or debunked.
I remember reading that some scat found in the Ossipees some years ago tested positive as coming from a mountain lion, but the F&G shrugged it off as an escaped "pet" or something similar. But I ask, who keeps a puma as a pet?
Like with the one that was struck by a car in CT a few years ago, it's just a matter of time before someone either gets a good photograph, finds a dead one, or strikes one with a vehicle. I'm convinced they are out there. Would love to see the one spotted crossing Moultonborough Neck Road (assuming it was one)...