Okay, so, I recently started a fortress in an Evil biome. Now, this biome, instead of skeletons all over the place, has nefarious soot clouds that drift by every once and a while- you know, the ones that make almost un-killable husks?
During the first year, half of the first migrant wave and all of the second were either wiped out by a soot cloud, or by the zombies they make. I had to seal myself inside, dig out long winding tunnels, and make a system of doors and floodgates to seal them in the tunnels so I can go back outside and get much needed wood.
I unseal the entrance, and send out my woodcutter. A mason also drifts past, followed by her dozen of war dogs she trained. I cut down a few trees, and some time later, get an announcement saying that she gave birth. I zoom to her, and find that she's sleeping on the edge of the map.
I also find that half her pack of war dogs got turned into soot zombies and are attacking the other half while she sleeps, but that's not the interesting part. I see that one dog is hanging around her rather than the fight raging a few squares away, then I notice an arm flying away and blood spurting onto the ground. Curiosity piqued, I check her for wounds, after finding none, I check her baby.
Her baby lost the arm, and is also a soot zombie.
The dog keeps attacking the baby, ripping off both arms and legs, until the mother wakes up. She sees the fight raging just a few feet away, then runs- taking the baby with her. The war dog follows, determined to make the zombie baby into a snack. Once far enough away, she makes a run for my fortress. Out of curiosity, I don't seal her out. She walks into the fortress, the dog still running after her.
Nobody notices the zombie baby flailing around her bloody stumps besides the dog, and the Elf Caravan. So now, I have a zombie baby with just a head, upper and lower body, Elves that run away whenever my mason gets close to them, and a war dog determined to do its job.
I'm thinking of making it my first mascot.