Food stealing between two cats rarely looks dramatic. The faster cat finishes his bowl, wanders over with an air of innocence, and the slower cat, who dislikes confrontation more than she dislikes hunger, simply steps aside. Within a few weeks the household has a round cat and a slim one, and an owner insisting they are fed exactly the same. They are not; they are offered the same, which is a different thing entirely. The answer is to manage space and speed so each cat's meal stays that cat's meal.
Separate Them While They Eat, Even Briefly
The reliable fix is physical separation during the meal itself. Feed both cats at the same time, so the thief is busy with his own bowl, but in different places: separate rooms with the door closed is simplest, and a barrier, a stair gate gap only one cat fits, or a raised spot only one cat uses can work where rooms are short. Meals only need to last as long as eating does, usually a short, calm interval, after which both cats can go back to sharing the house as usual.
Stay matter-of-fact about it. Carrying one cat off to her dining room can quickly become part of the routine she expects, especially if it always ends with food and quiet. What does not work is standing guard and scolding the thief mid-meal; he learns to wait until your back is turned, and the victim learns that mealtimes involve raised voices near her bowl.
Slow the Thief Down
Most stealing starts with a speed gap. A cat who bolts his food and is licking an empty bowl while his companion is a third of the way through hers has time, appetite, and opportunity all pointing at her dish. Slow his meal down so the two cats finish closer together: a puzzle feeder, food scattered in a shallow box of safe obstacles, or a textured feeding surface he has to lick rather than gulp all stretch his bowl out usefully.
Also check that the thief is actually getting enough of his own food. A genuinely hungry cat steals with conviction, and if he is on a measured portion for weight reasons, talk to your vet about how that portion is divided, because two smaller meals of his own may satisfy him better than one he finishes still feeling short-changed.
Protect the Slower Cat's Confidence
The cat being stolen from needs watching as carefully as the thief. A cat who expects to be displaced starts eating hastily, glancing up, or leaving the bowl early and returning later to find it empty, and over time she may stop asking for food in the shared space at all. Feed her where she feels safest, give her the full time she needs, and pick her bowl up with whatever she leaves rather than letting the other cat finish it and learn that persistence pays.
Weigh both cats now and then, or at least condition-check them by hand. Stealing is a weight-transfer system, and the pair of weights moving in opposite directions is often the first clear proof of how much food has actually been changing bowls.
Make Leftovers Nobody's Prize
Lift both bowls as soon as the meal is over, every time. Food left standing between meals teaches the thief that the other bowl eventually becomes available, which keeps the habit alive even on days when separation worked perfectly. If the slower cat consistently leaves some of her portion, serve her a little less and add a small extra meal later in her safe spot, rather than leaving the surplus down as an open invitation.
Keep the arrangement consistent across everyone who feeds them, because one person's soft-hearted habit of letting the cats sort it out undoes a week of careful separation in a single evening.
Noting each cat's portion, feeding place, and finished meal in KinsLe's Care Teams, with completed feeds marked as they happen, shows at a glance whether both cats truly ate their own dinners today.