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I recall reading that much of the energy a cat produces from its food comes from proteins which I assume would produce energy via being catabolised into amino acids which in turn, if glucogenic, would undergo gluconeogenesis and then, by means of being metabolised into glucose, enter glycolysis and the resulting pyruvate would be converted to acetyl-CoA and enter the TCA cycle to produce energy. I'm wondering whether this recollection is accurate and whether cats could, like humans, use ketone bodies for their sole fuel source if need be.

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