The book "In-Silico Analysis of Leptin Protein in Six Different Breeds" offers a comprehensive examination of the leptin protein, which plays a crucial role in regulating body weight, metabolism, and reproductive functions. Leptin, a hormone produced by fat cells, sends signals to the brain to control energy balance and food intake. This analysis highlights the biological mechanisms of leptin and its effects on the behavior of organisms, particularly regarding eating habits. The book is aimed at professionals and students seeking a deeper understanding of the role of leptin in different breeds and their physiological differences. It combines theoretical foundations with practical applications and provides valuable insights into the biochemical processes that influence eating behavior.