As was inevitable, the tonks have refused to be indoor cats -- it started some weeks ago when Yoko found her way out through the window that was being used for hanging out the tumble-drier vent pipe; and as the warmer weather has encouraged having windows and patio doors open, we bowed to the inevitable.
They have now discovered frogs, as fun squeaky toys.
One got brought in just, and by the time I had managed to get both cats shut upstairs away from it, the stupid thing had vanished. Well, either it made its getaway, or the cats will find it again...
Later -- it emerged from wherever it had concealed itself, hopping a bit askew, but very lively, and is now back in the pond for the moment.