An ant brain has about 250 000 brain cells. A human brain has 10,000 million so a colony of 40,000 ants has collectively the same size brain as a human.
118
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The human brain is more active during sleep than during the day.
28
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
On average, there's 300 billion neurons in the octopus brain.
129
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Starfish don't have brains.
132