OK, I don't even begin to understand what just happened.
I'd started having trouble with the orcs. the regular Mastercraft ones, rather than the Taiga type. They have seem sending horrendously well trained teams of ninja (Actually Berserker Master Sneaks) into my fort. Trap avoiding, door opening lunatics, who will leap out of the shadows and behead a dwarf in a single strike without warning. They're a bit of a problem.
Well then, I thought. Lets give them something else to leap out on. It's time to build some decoy dwarves. So I had my stonemason whip up a few decoys, and built a couple of spawn points near my front door to set them up on.
And that's when things got weird:
Akrul Ullungcilob, Miner has transformed into a dwarf busy with setting up a creature!
Akrul Ullungcilob, Dwarf Busy With Setting Up A Creature Miner cancels Store Item in Stockpile: Too injured.
The Berserker Master sneak has become enraged!
The Stray war Dog is caught in a burst of constructor gas!
The Stray war Dog is caught in a cloud of constructor gas!
The Stray war Dog is caught in a burst of constructor gas!
Nako Ogurzongsmo, Berserker Master sneak is no longer enraged.
The Berserker Master sneak has become enraged!
Nako Ogurzongsmo, Berserker Master sneak is no longer enraged.
Akrul Ullungcilob, Dwarf Busy With Setting Up A Creature Miner has transformed into a dwarf!
The Stray war Dog charges at The Akrul Ullungcilob's mechanical kit!
The Stray war Dog bites The Akrul Ullungcilob's mechanical kit in the head and the severed part sails off in an arc!
The Stray war Dog collides with The Akrul Ullungcilob's mechanical kit!
The Akrul Ullungcilob's mechanical kit is knocked over and tumbles backward!
Akrul Ullungcilob, Miner cancels Store Item in Stockpile: Item inaccessible.
So, first up, poor Akrul is, herself, transformed into some sort of other creature, and is on my animal list rather than my dwarf one. She immediately drops everything she's carrying, including all her clothes.
Then there's an explosion.
"Akrul Ullungcilob, Dwarf Busy With Setting Up A Creature Miner" appears terribly injured, telling me that "It's mechanical kit is missing.". The mechanical kit is a few squares away, I think blown off in the explosion. She fiddles around with the spawn point briefly, then my guard dogs leap into action and bite "The Akrul Ullungcilob's mechanical kit"'s head off, making a terrible mess.
Luckily, it seems unrelated to Akrul Ullungcilob herself, who has also reappeared. She is now eight years old. She is seriously unhappy.
Of the decoy there is no sign, unless that was the creature my dog bit the head off. The chap he was supposed to distract, Nako Ogurzongsmo, Berserker Master Sneak, continues to rage stealthily somewhere.
I tried again. This time I do it away from my dogs, but the end result is the same.
Luckily I only saved recently. It appears that the spawn point system looks like it has the capability to ruin the dwarf who uses it. Bit of a shame as I just picked up some treant seeds of the traders. Not sure how I'm going to deal with these darn ninja without sealing myself off from the merchants.
Edit: Aha, wait. I see. That mechanical kit starts undergoing a transformation, eventually turning into the decoy. One of it's intermediate states in the process must not be marked as friendly, so the dogs attacked it.
Still, ended up with my legendary miner, Akrul, horribly peculiarised. As a child, she's now unwilling to do anything other than harvest plants and haul.