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Scientists found that three predatory invertebrates—all of which use different hunting methods—adjust their feeding to correct nutritional deficiencies.
Researchers behind the study—to be published tomorrow in the journal Science —say other, much larger predators, like leopards and sharks, may also monitor what they eat to maintain a balanced diet.
While it's known that plant eaters and omnivores often eat a wide selection of foods to ensure the intake of various nutrients, carnivores aren't thought to be that fussy. Yet the study showed that predators also "read the label" when selecting their prey.