The Goliath Birdeater Tarantula is the largest spider in the world by mass. Despite its name, these tarantulas only eat birds occasionally, and even then they're usually baby birds. Does that make you feel better? We didn't think so.
The intricate pattern on this spider's abdomen acts as a sort of lid to the burrow it lives in. So if you ever stumble upon what looks like a little fairy's manhole cover, you might want to just leave it alone.
You know what I've always thought about spiders? They're just not sharp or spiky enough. Thanks a lot for fixing that, Nature. Oh, and it's a bright, poison-looking yellow, too? You shouldn't have. Really.