The book "Animal Models" offers a comprehensive analysis of eating disorders and body composition in higher animals that are not primates. It examines how these disorders relate to similar conditions in humans. Given the advancements in understanding the biological underpinnings of these disorders, it is important to consider the insights gained from comparisons between different species. The book aims to identify the common biological foundations shared by humans and higher animals, as well as the differences that exist, particularly in cultural contexts. These insights could help better address issues related to eating disorders in both animals and humans and suggest informed preventive measures. The last two decades of the 20th century have shown a significant increase in obesity in affluent countries, particularly in the United States, which has heightened awareness of various eating disorders.