New study says that dogs have
bigger brains relative to their body compared to cats.
Now, researchers say that social complexity also underlies the braininess of parrots, which have
big brains relative to their body size.
For example, you'd think that the primate with the next
biggest brain relative to body would be a close relative — a chimp or a gorilla.
Not exact matches
When they analyzed the MRI data, the researchers found that the physically fit children tended to have
bigger hippocampal volume - about 12 percent
bigger relative to total
brain size - than their out - of - shape peers.
They also have a
bigger brain,
relative to their size, than most other species of bats.
Our
brains are
bigger,
relative to body size, than other animals», but it's not just size that matters.
They found that the
bigger a primate's
brain relative to the species's overall body size, the smaller the guts tend to be.
But,
relative to body size, primates have much larger
brains than any other animals, and we humans, not surprisingly, have the
biggest brains of all — about six times larger than you would expect for a mammal of our size.
Mammals»
brains grew ever
bigger relative to their bodies as they struggled to survive in a world dominated by dinosaurs.
Humans diverged from their closest
relatives, chimpanzees, about 5 to 7 million years ago and the transition required a host of nutrients that were particularly beneficial to developing
bigger brains.