I feed Oscar three times daily - 7 ish, 3 ish and 11 ish. He's recently taken to hustling me for food an hour or more before it's due. I won't give in, 'cos I don't want a fat cat. Occasionally, his hustling drives me to the point of putting him outside and barring him entry via the cat flap until it's food time. When I let him back in, he ignores the food and sits with his back to me for a half hour before going to get what he's previously been hustling for. What exactly does he think he's up to?