I have a 2 y.o. red tabby...up until a month ago, I just kept his food bowl filled, I assumed that he'd eat when he was hungry and no other time. Whoops!! He started getting really fat. I put him on the "diet" cat food for overweight adult cats...one cup a day, a fraction of what he'd been putting away before. According to the bag, that should be fine. But I'm worried. He wolfs down his cup of food in the morning and when I get home from work, just begs and begs and begs for more food like he's starving. He's NOT thin, he looks healthy to a little bit chubby. I'm worried because I don't want him to be unhealthy by overfeeding him...but why is he acting like this, and how long is it going to last??? Thanks!!