What crucial factor requires owners to know the specific energy content (kcal/cup) of their puppy food brand?

Answer

A 'cup' of one brand might have significantly more energy than a 'cup' of another.

Every bag of food is different, meaning a measured 'cup' from one brand can contain significantly more or less energy than a 'cup' from another brand.

What crucial factor requires owners to know the specific energy content (kcal/cup) of their puppy food brand?
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