I have one of those game cameras, and the one time I tried using it, I got a picture of bigfoot too!
I got the camera all set up in the living room, then took it outside and strapped it to a tree near where we've seen animals. Next day I brought the camera back in, popped out the memory card.
It had two pictures in it. One was a closeup of me, while sitting in my recliner setting up the camera, but the other was bigfoot. MY big foot. Apparently taken while I was carrying the camera out to the tree.
Never did figure out how to use that darn camera. It only seemed to want to take pictures of me, plus it ran off about a dozen batteries that were split up in an odd way to produce 3 different voltages that I couldn't figure out a way to reproduce with a big rechargeable.