Many years ago I took my son to a movie. This movie took place on an island. The island had dinosaurs running around on it. The people were interacting with the creatures. A T-Rex even chomped down an attorney. It all looked so real. I had to remind myself I was watching a movie about events that never happened.
However, the dinosaurs in Jurassic park were fake. They were illusions made to trick us.
My point is that anyone with a camera and knowledge of special effects can make you see things that do not exist. That boar may have been shot and dropped with an airgun. Or like the movies, it didn't happen or at least the way they want you to think it happened.
Call me skeptical, but I ain't buying any of it.