Have you ever seen a full list of all the endangered species in the world? I hadn't until just now. Here is a combined endangered list of both plant and animal species. The animal list alone nearly froze my computer when I tried to print a preview and find out how many pages long it is. It's a full 88 pages: 5496 species. Add plants and there are 9850 endangered species.
Here's another site that helps to bring it closer to home for folks who can't completely wrap their head around statistics (like me). Arkive.org has a huge collection of photographs and multimedia materials of life on earth. This guy is a real cutie: an Asian short-clawed otter.