[Animal model of addiction]

Animal models are a valuable tool in the investigation of the nervous system. Many similarities between animal and human dependency behaviours have been observed. Animal model based on the self-administration response has contributed to understanding of the neurobiological basis of particular stages of the dependence process. Animals are used also to study the mechanism of alcohol dependence. Working out an animals model of addiction should include references to the clinically important phenomena related to psychological dependence which has not been displayed. This situation get us to consider the latest findings and theories about evolution of the wise human.