I guess an Unclassified, Giant, Hairy, bipedal, primate, running throughout the forests of North America, stomping around tents, running in front of cars, mutilating cattle, making howling sounds in the dark, banging on trees, throwing rocks at people (but never actually hitting them), is not nearly as exciting as Unidentified Vehicles purported to hail from other worlds, carrying infiltrators which specialize in: immobilizing, performing tests, and kidnapping a few of us and, after their anal probes are completed with whatever sick testing function they were programmed to accomplish, returning us to the exact time(+ 2 hours) and place we dissappeared.
Here's the thing that bugs me... why bother returning the test subject? Doubling their risk of being captured or attacked?