Sort of reminds me of a woman in my local town who for years carried her Jack Russell around with its head stuck out of a newspaper boys bag whilst she road her BSA Bantam.
Have trawled the net to no availe to find a story from a few years ago I remember about an Australian who took his cat everywhere he went on his bike, unfotunately they both died as a result of a road accident. Seem to recall the cat clung to carpet fixed to the tank, there was a smashing shot of the cat grinning, sat on the bike, whilst wearing a leather flying helmet and goggles!!!!