This ration is computed from the cat’s resting energy requirement (70 × weight^0.75), adjusted for activity and converted into grams using the food’s energy density. Use it as a starting point and adjust with the weight trend.
Methodology
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Frequently asked questions
How many grams a day for a 4 kg cat?
About 52 g of dry food for a neutered indoor cat, 62 g if normally active. On wet food expect roughly five times the weight, since wet food is mostly water.
Why does neutering change the ration?
After neutering, energy expenditure drops by roughly 20-30% while appetite stays the same: this is the main cause of feline overweight. The ration must be reduced accordingly.
Should I weigh the food?
Yes: a measuring cup varies by 20-30% between brands. Weigh the ration once, adjust after two weeks from weight and body condition, then keep the measure.