Most indoor cats are fed about a third more than they need. It happens a few biscuits at a time, and it shows up years later as stiff joints and diabetes.
The math behind the bowl
An average indoor cat of about ten pounds needs around 200 calories a day. Many dry foods carry 400 calories a cup, so half a cup, poured by eye, is already too much.
The number on the bag is a starting point for an active cat. Indoor cats, neutered cats and older cats usually need less.
Reading your cat's shape
Look from above: you should see a waist behind the ribs. Run your hands along the side: you should feel each rib under a thin layer, like the back of your hand. A belly that swings is fat, not loose skin.
Two meals and a measured scoop beat a bowl that never empties.
If your cat needs to lose weight, aim for about one percent of body weight a week. Cats that lose weight too fast can get a serious liver problem, so we plan it together.
"Weigh the food, not the cat's opinion. Cats are very good at asking for dinner twice."
Dr. Ana Ruiz
Feeding for a longer life
Measure every meal with a kitchen scale, not a cup.
Count treats as part of the day, no more than a tenth of it.
Use puzzle feeders so dinner takes longer and burns a little more.