Complex Brains and a Rich Social Structure in Whales and Dolphins Parallel that of Humans
A new study of 90 different species of whales and dolphins has found a striking similarity in the evolution of the brains of cetaceans and primates, including humans. The study looked at the social complexity of each species, and used that factor to determine if brain size could be used to predict the richness of the culture of each type of marine mammal.
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