Two frames, two relationships with food
Put a Siamese or Oriental-type cat beside a British Shorthair or a cobby domestic and the contrast is obvious: one is long, fine-boned, and visibly ribby by design, the other round-faced, dense, and built like a small barrel. Owners feeding both often make the same two mistakes in opposite directions — worrying the lean cat is starving and piling her bowl high, while serving the stocky cat a 'normal' portion that is, for her metabolism, a steady surplus. The breeds do not just look different; they tend to spend and store energy differently.
The lean Oriental-type eater
Oriental-type cats are typically active, vocal, athletic cats with a high surface-area-to-weight ratio and a fast, busy metabolism. A healthy one shows a clear waist, a light abdominal tuck, and ribs you can feel easily under a thin cover — that visible leanness is the breed's correct condition, not evidence of underfeeding. Such a cat may legitimately need more food per kilogram of bodyweight than a sedentary stocky cat, and may do better on meals with good protein density that support constant motion. The trap is 'correcting' her shape: fattening an Oriental-type cat to look like the rounder cat next door creates an overweight cat wearing a lean frame, with the joint and health costs that carries.
Appetite in these cats is often strong and dramatic — they announce hunger loudly — so let body condition, checked with your hands every few weeks, arbitrate how much the bowl grows.
The stockier breed's quiet surplus
Stocky breeds and cobby types tend toward the opposite profile: calm, less relentlessly active, and efficient at storing what they eat. Their correct condition hides under a thicker natural padding, so hands-on checking matters even more — you should still find ribs with gentle pressure, and see a waist from above, even though she will never show the Oriental's tuck. Measured portions are non-negotiable for this cat; free access or generous eyeballed servings drift her upward a few grams at a time until the vet's scales deliver the news. Food puzzles and activity before meals help her as much as portion control does, because her challenge is expenditure as much as intake.
Feeding both in one home
Never calibrate one cat's bowl by the other's. Weigh each cat's ration separately, feed in separate spots if the stocky cat is inclined to finish the lean cat's leftovers — a common and quietly disastrous arrangement — and keep different condition targets written down for each. The lean cat's weight staying stable and the stocky cat's staying stable can require portions that look unfair side by side; fairness is each cat at her own healthy condition, not identical bowls. Reassess both after life changes — neutering, a house move, or the slowing of middle age shifts needs in both types, usually downward for the stocky cat first.
If either cat's condition changes quickly despite a steady ration, or appetite swings sharply, a vet check comes before portion experiments, since weight change can signal illness in a lean cat just as easily as in a round one.
Keeping separate portion records, weights, and condition notes for each cat in KinsLe through Care Teams stops two very different feeding plans merging into one habit, with every meal and check assigned and timestamped.