Capybaras and caimans doze inches apart on the same riverbanks across South America, and researchers say the famous truce has nothing to do with friendship — it's a cold calculation that a biting, 45-kilogram rodent simply costs more than it's worth
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What looks like nature's most unlikely friendship is actually a brutal cost-benefit analysis: the caiman has simply decided that eating a 45-kilogram rodent isn't worth the trouble.
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