Look at my picture.
Okay, so I got a nice Fortress going. Bad part is I don't have iron, so my military is pretty weak. So I just went bonkers with traps. Anything short of a full invasion force will just end inside my cages. So far, the only casualty has been a fisherdwarf who got killed by a werelizard. Also a cat, killed by another werelizard. These things suck.
And I'm pretty sure I'm gonna lose a farmer to a mood. He was a good grower too. Damn.