4. And is it true that dolphins may have their own "language", of sorts? What they use those brains for is a bit of a mystery. Elephant brains also show a complexity similar to dolphin brains, and are also more convoluted than that of humans, and with a cortex thicker than that of cetaceans. Although it may not be directly meaningful, in terms of brain size, the bottlenose dolphin brain averages 1.6 kg in size, by comparison, the average human brain weighs about 1.35 kg and a chimpanzee’s brain weighs 0.4 kg. Dolphin. But mentally, dolphins are even more similar to humans. Dolphins have a large brain. They have also been identified with unique personalities. One of the friendliest animals in the world, Dolphins have the ability to recognize themselves in the mirror which proves that they are one of the intelligent animals in the world. The researchers compared fluorescently painted slides of human chromosomes with similarly rendered slides of dolphin chromosomes. Then there are the studies that show that dolphins can not only communicate with their own languages and discuss things like demographics, locations and genders; but also learn symbolic languages created by humans. There is more interaction among dolphins and humans in captivity than in the wild. In the book The Dynamic Human, it is argued by a group of researchers from the University of Adelaide that humans aren’t the brightest crayons in the box. This type of interaction allows humans to find out more about the overall intelligence and behaviors of dolphins. Dolphin’s also have complex cultures including groups with assigned leaders. They are very much helpful to humans in solving different mysterious related to the oceans. Dolphins have always been known to be intelligent but are classified below chimps in terms of smartness. Brain structure. Dolphins clearly demonstrate the ability to do all of these things and most scientists agree that dolphins are very intelligent creatures. Large brain animals like humans, chimpanzees, and dolphins have a number of things in common. But there are some fascinating similarities between a dolphin’s daily life and a human’s. Simply put, Dolphins have a lot in common with humans and they may be intelligent enough for actual human interaction. Dolphins hold many of the same chromosomes as humans. Dolphins may be thought of as “a kind of alien intelligence sharing our planet” and “the closest we’ll come to encountering ET.” Although all species on Earth descend from a common ancestor, humans and dolphins have been on different evolutionary paths for aeons, resulting in the massive differences we see today. Dolphins and whales have the largest brains in the ocean – even larger than a humans! Recent studies show that they may have the ability to distinct between personalities, think about itself and the future. Bottlenose dolphins are the type of Dolphins that have the largest brains among all animal kingdoms. 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