These tiny spiders prove that no matter how small a spider is, they're really freaky looking up close.
One of the great things about setting aside land as a sanctuary for one creature is that it helps to preserve a whole ecosystem full of plants and animals -- some of which we may not even know exist yet. Take for example the two new species of spider -- both among the world's tiniest -- that were just discovered on the grounds of a panda sanctuary in southwest China. One of these little guys averages less than a millimeter across. You could eat, like, 50 of them in your sleep and never even know it!