sperm whales have the biggest brain in the world.
who has the biggest brain in the world?
sperm whales
brain size was previously considered a major indicator of the intelligence of an animal. since most of the brain is used for maintaining bodily functions, greater ratios of brain to body mass may increase the amount of brain mass available for more complex cognitive tasks. allometric analysis indicates that mammalian brain size scales at approximately the ⅔ or ¾ exponent of the body mass. comparison of a particular animal's brain size with the expected brain size based on such allometric analysis provides an encephalisation quotient that can be used as another indication of animal intelligence. sperm whales have the largest brain mass of any animal on earth, averaging and in mature males, in comparison to the average human brain which averages in mature males. the brain to body mass ratio in some odontocetes, such as belugas and narwhals, is second only to humans.
whale
knowledge of the volume of the cranial cavity can be important information for the study of different populations with various differences like geographical, racial, or ethnic origin. other things, such as nutrition, can also affect cranial capacity.





























the volume of the human braincase has increased as humans have evolved (see homininae), starting from about 600 cm in "homo habilis" up to 1740 cm in "homo neanderthalensis", which was the hominin with the biggest brain size.
brain size