"Perched on the back of a sunlit chair was something about 9 inches tall and shaped rather like a plump toy penguin with a nose-job. It appeared to be wearing a one-piece knitted jumpsuit of pale grey fluff with brown stitching, complete with an attached balaclava helmet. From the face-hole of the fuzzy balaclava, two big, shiny black eyes gazed up at me trustfully. Kweep, it said quietly." When author Martin Windrow met the tawny owlet that he christened Mumble, it was love at first sight. Rais...