In my previous for on this world, I had had a dwarf get bitten and infected by a were-zebra. I locked him in his bedroom and built a wall across the doorway and just left him there. He then had a strange mood, which I didn't let him loose for, so he turned melancholy. So that's how he was when I retired the fort, a melancholy were-zebra, walled into his bedroom.
Fast-forward a bit, and in my new fort, I'm seeing a number of immigrants from the old fort. getting a legendary stonecrafter, already nicknamed "Stonecrafter' in the second wave was nice, as were the legendary glassmaker and miner in the third wave. They must have liked my leadership or something. Maybe it was the cookies. Anyways, I'm watching a new batch of migrants appear at the edge of the map, and as one of them appears, he suddenly turns into a N with a ~ over it, and I get the notification that "DucimWere!" has turned into a were-zebra. Uh-oh.
Great timing, hitting the full moon right as he steps on the map, as part of a wave of 17 migrants. I figure it's going to get messy out there, so I order my entire military to get out there and kill him. I then watch to see how bloody it gets before the military arrives. And I watch the were-zebra wander slowly off to the side, as more new migrants appear and rush towards my fort. He's not attacking them, and he's not even headed towards the fort. huh? So I check him with v->g, and it tells me he's melancholy. Even in his were form, he's still melancholy. Ok, I'll take that.
A couple of migrants, a farmer and a potash maker, rush over and start punching him, but he doesn't respond. Too melancholy. Then the troops show up and after getting beaten on for a while, he gets a spear stuck in his neck, followed almost immediately by a hammer to the neck. This seems to be a bit too much, as he becomes enraged! But an enraged melancholy were-zebra is apparently still too melancholy to fight back, as he continues to do nothing. Eventually someone sticks a spear in his head and he dies. yay. No one even got bit.
So I turn off the alerts and get ready to start processing the new arrivals, when I see "Doren Rajustteshkad, Hunter, has been found dead." Huh? No one was injured in the fight, I was sure of it. I check the reports, and discover that my military is going after each other. Looks like killing a melancholy were-zebra has kicked off a loyalty cascade. Looks like this fort is going down.