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

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. The post 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…