Humans may not have to worry about getting eaten by an anchovy, but according to research we technically are not much higher on the food chain. Like the tiny fish and the pig, humans fall right in the middle between plants and carnivorous predators on the so-called "trophic" scale used to rank species on the food chain -- a function of our broad omnivorous diet and our reluctance to kill and eat animals like lions and tigers that fall higher on the scale.

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