The walker, in his 30s, is sure he caught a snap of the wild beast during a recent trip to Dartmoor.
Jon, who didn’t want to give his full name over online trolling fears, says he and his family were so unnerved by the sighting they quickly left the scene.
And on the way back to their car they stumbled upon a half-eaten deer carcass, he claims - adding to their fears.
He definitely photographed… something but quite what it is remains unclear. If a big cat has been munching on that deer it would be easy enough to find out using DNA.