This is "Willy," a woodland vole who was found by Tom and brought almost unscathed to the house.
The girls kept her indoors overnight for observation.
When I suggested the next morning that maybe the vole would do better without the stress of being played with, Katie answered, "We're just watching her in the arena."
The video shows the vole in her arena, and here is a pretty picture of her munching on a carrot.
She was released right after this, and we expect her to do fine back in the wild.
Till Tom gets better at hunting.