Well, that was... well.
Werehare showed up at my fort, slaghtered 10 dwarves and left. One dwarf lingered, injured by the werehare. He was missing a leg and had several other fractures. Figured he was infeted so I designated a hospital zone, had him moved in there, and then walled him in.
He died of dehydration. Woops, my bad.
Fast forward a year, and another werehare shows up. I'm more ready for this one, but my military is sluggish to respond, most of them are either sleeping or on break. Even so, one soldier is available. The werehare kills a goat and then proceeds to beat a mason with a shoe. Lone soldier shows up just in time to save the mason. Unfortunately the soldier is one of the fresh recruits and doesn't stand a chance. He ties up the werehare long enough to buy some time, but is eventually ripped apart. After the battle, the werehare goes back to beating the insensate mason with the shoe.
Before the rest of the army arrived, the beast turns back into a human and runs off. I check the log and don't see any sign of a bite, so I have the mason transferred to the hospital ward. After 2 weeks of rest, he's back up on his feet and building the wall like a boss!
2 weeks later he transforms into a werehare while working on the wall. Apparently I missed something.
This time my military is prepped and ready, and they respond with fast, leathal force, preventing any of the laborers from being harmed. I check the logs.
Three of them were bitten.
I guess that means I now have a 3-man cave exploration team. Now to go through the process of assigning them very specific equipment and walling them out in the caves.