40d:Ratman

Half man, half rat. Ratmen live in chasms in packs.

One of the things that makes them unique is that they have innate swimming, and thus drowning them is ineffective. However, they pose little enough threat to even untrained wrestlers (unless they are in a pack), so such elaborate methods are unnecessary.

They can lurk in their chasm for a year and then attack your fortress along with other monsters if their chasm is open to the ground. However, if they are in an enclosed chasm or pit, the easiest strategy is to simply wait for them to die of old age - given their short life span, and the fact that they do not reproduce, any chasm's population of ratmen will be dead several years of embarking.

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