Help, how do I know if my kitten is overweight? She's a 7-month old calico and she is a large (very!) cat - but not that fat. Just very long and tall, with a little paunch on the sides. How do I know if this paunch is too much? Believe it or not, she is 15 pounds. But she's not a butterball either. Maybe I need to attach a picture? My primary vet thinks she's overweight, but others say "just a little" I don't know that I should be enforcing a diet when she's only 7 months old ... My vet's suggesting the "Catkins" diet - any comments?