Someone asked me about my hobo spider, and why it only has 3 legs on one side...
In mid- to late-summer we have a lot of daddy long legs, and since they don't trigger my usual "flee" response to spiders I'll sit and watch them. I noticed quite a few had less than 8 legs... but seemed to be getting around just fine, so I queried the internet for more information and found this.
They can lose a leg when attacked and then make a safe get away. The legs don't grow back. When I was sketching up my hobo I knew he was a survivor, so that's why he only has 7 legs!
Nature is pretty neat, huh?