It is the ability of living organisms to adapt to their environment, to learn, to respond to available information and external factors, and to make decisions and solve problems based on biological mechanisms and functions. At the beginning of the 20th century, the German-British psychologist, one of the leaders of the biological direction in psychology, Hans Jürgen Eysenck, called biological intelligence a determinant, while all other types of intelligence, such as social and psychometric, are only its consequence. Biological intelligence is inherent in humans, mammals, birds, and even cephalopods. It is due to the peculiarities of the structure of the brain and its functions.