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Male Snakes Spend Mega Calories When They Mate

Every spring, red-sided garter snakes leave their hibernation burrows to engage in a frenzied jumble of mating. But a new study finds that doing the deed is no easy feat for males; in fact, they can spend up to a whopping 18 percent of their daily energy making special plugs that increase their chances of mating success. Leer más.

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