The animal with the biggest brain is the sperm whale. Their brains can weigh up to 9,000 cubic centimeters (cm3), which is the largest of any animal on Earth
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Their brains are specialised for echolocation and processing large amounts of sound data
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Sperm whales use a form of sonar called clicks to navigate and hunt in the dark depths of the ocean
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Their brains have a large proportion of glial cells, which support and protect neurons
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Sperm whales have a highly developed auditory system that allows them to detect and interpret sound waves
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Their brains are also thought to be involved in complex social behaviors, such as communication and cooperation
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Sperm whales have been observed exhibiting cultural behaviors, with different populations having distinct vocalisation patterns
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Despite their large brain size, sperm whales' intelligence is still not fully understood and is the subject of ongoing research
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Sperm whales have been known to dive to depths of over 2,000 meters in search of food, and their brains play a crucial role in navigating these dives
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Studying sperm whale brains can provide insights into the evolution of large brain size and complex behavior in animals