'Bickering' flies make evolutionary point

When a male fruit fly gets aggressive, he rears up on his back four legs and batters his foe with his front pair. Neither fly seems particularly damaged by the encounter, but their subsequent actions are telling about the ...

Do bigger brains make smarter carnivores?

Why do dolphins evolve large brains relative to the size of their bodies, while blue whales and hippos have brains that are relatively small?

How highly social mammals optimize group size

(Phys.org)—The sizes of social groups among mammals are driven by dynamics from within the group and a combination of pressures and incentives from outside. While aggregation and cooperation are often beneficial for species ...

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