KBC 13 (September 15, 2021): The largest mammalian brain belongs to ...
Answer: Sperm Whale
The largest mammalian brain belongs to the sperm whale, one of the biggest cetaceans in the sea. The sperm whale's head comprises 25 to 35% of its entire body length. The mature adult sperm whale's brain weighs an average of 18 pounds, and can grow to be nearly 500 cubic inches in size.
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