The fortress was attacked by a Werelizard, the very first lycanthrope to ever attack me. My dorfs fought valiantly, but one died and another was wounded, and the Werelizard reverted into a human and managed to high-tail it out before anyone could take him down. I buried my dead and went about my business.
Some of you know where this is going.
I was busy building my hospital when the surviving dorf turned into a werelizard, much to my shock and surprise. The battle was fierce, and somehow I managed to take it down without losing anyone. Of course, there were many wounded, but I finished the hospital and set them to rest. But then came the dawning realization that they, too, were most likely going to turn.
And so, regrettably, I sealed off the hospital as they lay in bed.
Time passed and they became hungrier and hungrier. I wondered if, maybe, I had made a mistake. And just as I was considering releasing them, the full moon hit and they turned. Well, as it turned out, not all of them had been infected, but those that hadn't were quickly torn apart by the werelizards.
Meanwhile, another dorf that had managed to hide her wounds turned while in her room. I was able to seal her in the first time, but the second time around she smashed down the door. Miraculously, she harmed no one after that, and now I have her sealed on the roof of a walkway.
Two werelizards in the sealed hospital, one out on a walkway... I'm going to build them a housing facility outside the fortress, accessible only via a bridge, and keep them in reserve for the next ambush or siege. I'm trying to think how I might be able to make more, but I don't see how I could do it without having another massacre on my hands...