How Fat Is Too Fat for a Cat, and Does Meat Make Cats Fat?
📝 Summary
Judging whether a cat is overweight comes down to body shape, not the number on a scale — breeds and builds differ, so compare body condition, not weight. Using a 1–10 body-condition score, you can feel the spine and ribs and watch the waistline: 1–2 is very thin, 5–6 ideal, 9–10 obese. A cat's saggy belly 'primordial pouch' is normal and not a sign of fat. As obligate carnivores, cats digest meat efficiently and grow lean and strong on it; what causes obesity is hard-to-digest, starchy, sugary food — not meat.
1 Judge by Body Shape, Not Weight
Whether a cat is fat shows in its body shape; don’t fixate on weight.
First, cats of different breeds and even different bloodlines (different origins) of the same breed have different frame sizes, so you can’t compare fatness by weight across them. It’s like comparing the weight of a 150 cm person and a 200 cm person to judge who’s fatter — meaningless.
To tell if a cat is obese, check whether its overall body is well-proportioned and whether the spine and ribs are easy to feel.
2 The 1–10 Body Condition Score
1–2 points: very thin
From above and the side, the waist dips inward clearly and you can see the rib distribution.
Feeling the spine and ribs, the bones are very prominent, with almost no fat between bone and skin.
3–4 points: rather thin
From above, the waistline is clear but the lines aren’t round. From the side, the belly tucks in slightly. Ribs aren’t visible overall.
Feeling the spine and ribs, you can easily feel them, with a little fat between bone and skin.
5–6 points: ideal body condition
The waistline is not obvious and the torso is oval. The belly has no inward dip and no sag.
Feeling the back and ribs, the muscles feel full; with slight finger pressure you can feel the spine and ribs.
7–8 points: rather fat
From above, the body looks ‘spindle-shaped.’ From the side, it’s rounder with a small belly that sways when running.
Feeling the back and ribs, you need firm finger pressure to feel the spine and ribs.
9–10 points: very fat
From above, the middle is a ‘ball.’ From the side, the belly clearly sags and sways when walking.
Feeling the back and ribs, the bones are hard to feel.
Moderation is best in all things; being too thin or too fat harms a cat’s health. Don’t let a cat become obese just because you find fat cats cute.
3 That Belly Pouch Is Normal
A cat having a belly is normal — the technical term is the ‘primordial pouch.’
This little belly (a loose skin flap) is a feature of felids, inherited from the wild. Its technical name is the ‘primordial pouch.’
Scientists guess the primordial pouch may help felids store fat to survive cold winters.
So when your cat has this little belly, rest assured — it’s not from being fat!
4 Meat Builds Muscle, Not Fat
Cats digest meat efficiently and only grow strong, not fat.
Cats are carnivores and metabolize meat quickly. Fed appropriate amounts, they won’t become excessively obese. It’s the hard-to-digest, high-starch, high-sugar diets that make cats metabolize poorly and gain weight easily.
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