Neutered diet

A neutered diet is formulated for spayed or castrated animals, whose nutritional needs genuinely change after the operation. Neutering alters both metabolism and feeding behaviour in a way that works against the animal: maintenance energy requirements fall while appetite can simultaneously rise, and that combination strongly promotes weight gain unless the [ration](/glossary/ration) is adjusted (WSAVA, 2021). Neutered foods respond with a more moderate energy density and a maintained protein content, the aim being to support lean mass while limiting calorie intake. Some feline formulas additionally pursue urinary-support goals, because the neutered cat can be somewhat more prone to lower urinary tract problems, particularly when it is also sedentary and overweight, a risk linked partly to mineral balance and [crude ash](/glossary/crude-ash). The point that most deserves emphasis, however, is behavioural rather than formulatory: the most common and consequential mistake owners make is keeping the same quantity of food after neutering as before it, even though energy needs have dropped. The diet itself cannot compensate for that. Monitoring weight and body condition score in the weeks following the procedure, and reducing the ration accordingly, is what actually protects the animal, since a neutered food does not replace thoughtful [portion control](/glossary/portion-control) or regular physical activity. It shares its underlying logic with the [light diet](/glossary/light-diet) and the feline [indoor diet](/glossary/indoor-diet). For more, see the [Petipedia glossary](/glossary).

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General documentary information. For an individual animal, a veterinarian's advice takes precedence over any online content.