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?

Socialising led to bigger brains in some mammals

(PhysOrg.com) -- Over millions of years dogs have developed bigger brains than cats because highly social species of mammals need more brain power than solitary animals, according to a study by Oxford University.

'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 ...

Culture may explain why brains have become bigger

A theory called the cultural brain hypothesis could explain extraordinary increases in brain size in humans and other animals over the last few million years, according to a study published in PLOS Computational Biology by ...

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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