Brain Sperm whale

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the brain largest known of modern or extinct animal, weighing on average 7.8 kilograms (17 lb), more 5 times heavier human s, , has volume of 8,000 cm. although larger brains correlate higher intelligence, not factor. elephants , dolphins have larger brains humans. sperm whale has lower encephalization quotient many other whale , dolphin species, lower of non-human anthropoid apes, , lower humans .


the sperm whale s cerebrum largest in mammalia, both in absolute , relative terms. olfactory system reduced, suggesting sperm whale has poor sense of taste , smell. contrast, auditory system enlarged. pyramidal tract poorly developed, reflecting reduction of limbs.








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