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The brain structure in all vertebrate (animals with backbone) is basically the same. In the course of evolution, the vertebrate brain has undergone changes, and become more effective. In lower animals frogs and lizards most of the brain structure is transfer from one generation to other. Therefore, their behaviour is mostly without any teaching. In mammals, and especially in humans, the brain is developed further during life by learning. This has the benefit of helping them fit better into their environment.