[JumpCrisscross]

> subtle neuro-anatomical differences (such as number of neurons) rather than the presence of specialized "brain modules"

Killer whales, long-finned pilot whales and short-finned pilot whales each have more neurons than humans [1].

[1] https://en.wikipedia.org/wiki/List_of_animals_by_number_of_n...

[posterboy]

They have more body to control, too.

Surprisingly, certain birds have a very high brain to body size ratio.