Well I don't know anything about INTERNET RUMORS but my wife said, while she was at the hairdresser, the woman cutting her hair showed her this same picture. She said her cousin received the picture from a friend. She said it was the first confirmed deer killed by a mountain lion in PA. The damage was all done to the back end, that's why it isn't visible in the picture. Later someone found said mountain lion, shot it and the lion had a tatoo that read : Property of the PA GAME COMMISSION. Now that is what my wife's hairdresser said.
Anyways, shame for a very nice deer.