Compare it with the largest whale, the blue whale which has a brain of 5 kg. Compare the size of a blue whale and human brain | Hint; the bid one is the whale brain. The more cognitive capacity the greater the number of neurons. The true answer is that the blue whale's brain is approximately 6000 grams or 13.2 pounds. It weighs around 120 tons and the size of blue whale makes it very difficult to weigh it accurately. For comparison, the human brain is only about 80 cubic inches. So, I will go with a sperm whale. Sperm whales always showed aggression. Sperm whales always showed aggression. It is difficult for sperm whales to kill any blue whale due to its very large size. Louder, larger, longer and heavier than any other creature and with the biggest brain, it’s a multi-record breaker and a totem of conservation for all whales and dolphins. yes, a few Sauropod dinosaurs may have been longer than the Blue Whale (over to 40 meters long) and almost as heavy. The blue whale's heart weighs as much as a fully-grown elephant, and its brain weighs around 15 pounds. So, I will go with a sperm whale. Even baby blue whales can weight 3 tons at birth. Monster-size sharks in The Meg reach lengths of 20 to 25 meters (66 to 82 feet). Paul Cline saved to The truth and beauty brigade. Brain Size Brain Structure Blue Whale Body Size Mammals Google Search Beauty Beleza Beauty Illustration. The brain of an elephant makes up less than 0.1% of its body weight. Learn about its appearance, classification, size, weight, height, sound, diet, habitat, life cycle, breeding, its body parts, adaptations, baby whale, hunting and many Blue Whale Fun Facts. The blue whale has hind legs. Comparison of actual brain size with the size expected from allometry provides an encephalization quotient (EQ) that can be used as a more accurate indicator of an animal's intelligence. Although the blue whale is the largest cetacean, the same does not happen with its brain. It is difficult for sperm whales to kill any blue whale due to its very large size. Even thought the blue whale has hind legs they don't even use it as we all know because they are sea creatures. Blue Whale Size Comparison 2 by SameerPrehistorica on DeviantArt ( Medium-sized airplane : Boeing -----> 138 long / 45 tonnes) Quetzalcoatlus Northropi -> Wingspan of 33 - 36 feet / Blue Whale Size Comparison 2 A tribute to one of the most awesome and famous group of mammals and my top favorite mammalian group, the mighty proboscideans ! Blue Whale Vs Sperm Whale fight comparison- who will win? by Athena May 9, 2017, 5:19 pm 523 Views Comments Off on Blue Whale Brain Vs. Human Brain.