The largest brain of a living creature, belongs to the sperm whale, whose intellectual center weighs a whopping 9kg. Or about 19.8lbs. The stegosaurus dinosaur, which could reach lengths of 30′, had a brain the size of a walnut.
A human brain comprises only 2% of the body, yet it uses 20% of the oxygen and blood.
The longest living cells in the body are brain cells, which can last a lifetime.
