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One early suggestion was brain size (or weight, which provides the same ordering.) ... while birds make do with a much smaller one. ... Blue whale: 5,000,000,000 ...
Humans are born with 28% [12] of the adult brain weight, chimpanzees with 54%, [12] bottlenose dolphins with 42.5%, [13] and elephants with 35%. [ 14 ] Spindle cells (neurons without extensive branching) have been discovered in the brains of the humpback whale , fin whale , sperm whale , orca, [ 15 ] [ 16 ] bottlenose dolphins , Risso's ...
The blue whale is the largest animal known ever to have existed. [42] [43] [44] Some studies have estimated that certain shastasaurid ichthyosaurs and the ancient whale Perucetus could have rivalled the blue whale in size, with Perucetus also being heavier than the blue whale with a mean weight of 180 t (180 long tons; 200 short tons).
The previously mentioned antarctic blue whale holds the title of the biggest animal on earth. It can weigh up to 400,000 pounds and reach a length of 98 feet. The giant’s heart is the size of a car.
The heart of a blue whale can weigh up to 1,300 pounds, while its tongue can weigh 5,400 pounds, which is the average weight of an adult female elephant. Blue whales have sleek, streamlined bodies ...
In another specimen in which the length of the whale was 20 metres (66 ft) and weighed 50.9 metric tons, the brain weighed only 3.636 kilograms (8.02 lb). [5] "Blue whales have the largest penises on Earth. An erect blue whale penis is 12 inches (30 cm) in diameter and ten feet in length.
The brain-to-body mass ratio was however found to be an excellent predictor of variation in problem solving abilities among carnivoran mammals. [20] In humans, the brain to body weight ratio can vary greatly from person to person; it would be much higher in an underweight person than an overweight person, and higher in infants than adults.
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