Creepily, it resembled the Horsehead Nebula. I didn't know whether to take it away from her or scan it for radio signals and signs of life.
In the end, she took the decision away from me by dragging it around the house in her mouth as her prey, and it disintegrated in a little trail of destruction and surrender all over the tile. Bye-bye, denizens of the Horsehead Dust Galaxy -- we never knew ye.
Note in all of this, the thought of vacuuming never came up.