No tethering of any sort to the bike, either on mr DR or CB; if I were to go down, and I frequently do when offroad on the DR, I want her to be thrown clear and not attached to a cartwheeling bike. As far as food, dog food is pretty much the same price everywhere, and it's a lot easier buying it in the road than taking up invaluable storage by carting it all the way from Arkansas. As far as her wanting to ride, there is no doubt. I can't keep her off o the thing. This last trip really kicked both of our butts, but she was back on and rolling just a few days later for the Special Olympics ride we do every year.