Comparing the IQ of dolphins with that of monkeys, dolphins have a higher IQ. This is related to the brain proportion of animals. The brain proportion of dolphins is 1.2%, and the highest among apes is 0.7% for chimpanzees, so dolphins are smarter.
Currently, the only known intelligent animals on the earth are humans, but there are indeed many intelligent animals. First, let me introduce to you how to measure the IQ of animals? In the initial measurement, there is an indicator called "encephalization index", which is the proportion of an animal's brain to its body. The larger the brain ratio is, the more intelligent it is. For example, a typical person with a higher brain-talk index is a human, and a human's brain-talk index reaches 7.5, second only to humans are dolphins with 5.3, white-fronted capuchins with 4.8, killer whales with 3, hei orangutans with 2.5, macaques with 2.1, dogs with 1.2, and cats with 1. This encephalization index is usually calculated by treating cats as 1 as a standard. After calculation, it turns out that for humans it is about 7 and for dogs it is 1.2, which means that dogs are a little bigger than cats. The encephalization index is a very intuitive index.
