I started this thread to examine all the mobs and such in their normal (and foreign) habitats. To begin, take a look at this cute (scratch that, ugly) endermite chilling with one of my creepy friends. As you can see he is camera shy. If you see any other cool mobs, post em. And don't do them from mob arena, that isn't a classic mob habitat.
Statistics are based on your own activity so the low spawn rate is because you haven't spawned a lot of them In general I get 2-3 endermites from a stack of pearls - 16 and that is pretty decent. Endermites are pretty cute though~
I have an endermite named "Larry II" (Larry the second). He's a reference from another server me and my friend used to play on, but I had to bring him here....lol
Pretty sure endermites are like silverfish that sometimes spawn when you use enderpearls, so their 'use' would be a hostile mob.