My cats, an 18 lb norwegian forest cat (King Solomon) and a 13 calico (Millicent) are OBESE. I have them on diet food on a restricted amount, but they're both quite the chubs!
Solomon was a lot thinner when he was indoor-outdoor, but Fatty McFatterson keeps getting into fights as well as jumping into storm drains that he then can't get back out of, so he's firmly indoors now.
Today, I caught Solomon stealing food out of the puppy's food bowl (which is elevated, but apparently not so much he can't reach it on his hind legs).
The puppy isn't fat...yet. Spartacus is a 7 month old lab/possibly newfoundland mix who weighs about 55 lbs.
I give up. They're all going to have to be fat forever, LOL!