Dolphins have brains that are forty percent larger and more wrinkled than humans. Are we really the most intelligent animal on earth? The answer is probably yes. Much of the dolphin’s brain is taken up with their sense of sonar. Scientists are now assuming that they cannot only “see” their surroundings and other dolphins with their sense of sonar, but that they can actually see into their friends. They would not have to ask another dolphin if it is feeling well, they can see their friend’s innards for themselves.