Here, we observe the North American Tree Slug in its natural habitat. This voracious tetravore is considered by many to be simply be a snail without a shell. Nothing could be further from the truth. The juggernaut-like forward motion of the North American Tree Slug in the absence of its natural predators is truly terrifying to behold. An entomologist, ignorant of the raw animal power of the slug, has awoken in his tent to discover his rare lichen samples partially devoured in only a few short hours. And there are many more kinds of slug, all around us, everywhere.