Given the choice, many animals will opt for cooked food over raw

Given the choice, many animals will opt for cooked food over raw. This shouldn't surprise us: "coked food is better than raw," Wragham says, "because life is mostly concerned with energy" - and cooked food yields more energy. 

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Ninety percent of a cooked egg is digested,whereas only 65 percent of a raw egg is; by the same token, the rarer the steak, or the more al dente the pasta, the less of it will be absorbed. Dieters take note.

M. Pollan, Cooked (2013), 61 (and footnote)