I suppose it could be pasted together, but it's not exactly an alien abduction photo. Cougar are night hunters, and are out there chasing deer and other food. It's not unusual at all. It happens every single night, anywhere there are cougar. I guess folks think that predators roar and act dramatic when they're on the attack. In reality they do it matter-of-factly, just like the photo shows. For them it's just like going to work in the morning.
I'm agreeing on both points.
I'm thinking, like twycross posted, that this photo is part of a series of trail cam photos. I agree about the rationale... that it's not like it was an "alien abduction photo".
It gets me sometimes how unrealistic folks are about predators. If a cat roared and "acted dramatic" it'd spook the deer and the cat'd be out the effort for that attempt. Folks don't seem to get it that those cats are professional killers... yeah, "just like going to work in the morning".
This also brings to mind what Elmer Keith wrote in "Hell, I Was There". Most folks say cougars prey on old, sick, or injured deer. He said he saw cougars bypass the old, sick, and injured in favor of a perfectly healthy deer. And they don't clean up their cold kills either. They kill a healthy deer, eat what they can, wait and kill the next meal fresh.