Animal aggregations are a subject of general sociology, focusing on the physiological effects of crowding on individuals within groups. This study aims to contribute to the development of general sociology based on physiological principles. Previously, it was believed that crowding had uniformly harmful effects on animals, except during hibernation or breeding. However, recent findings show that unorganized crowds can have beneficial effects, and this study seeks to understand these phenomena. The study focuses on the physiological and behavioral effects of crowding on organisms not yet considered socially integrated. It is important to understand the physiological basis of social behavior, as many social traits in humans and animals are not unique to them but are variations of common traits. The study also considers the ecological aspects of animal aggregations, including the interactions between organisms and their environment. The term "aggregation" is used to describe groups of animals that are not necessarily socially integrated. This term is used in contrast to "society," which refers to more organized groups. The study explores various types of animal aggregations, including those formed by physical contact and those formed without physical contact. It also discusses the classification of these aggregations, including accidental associations, primary and secondary associations, and other categories. The study also addresses the concept of instinct in animal behavior, noting that while instinct is often used to explain social behavior, it is not always the case. The study emphasizes the importance of understanding the physiological and ecological factors that influence animal aggregations. It also highlights the need for further research to better understand the complex interactions between animals and their environments.Animal aggregations are a subject of general sociology, focusing on the physiological effects of crowding on individuals within groups. This study aims to contribute to the development of general sociology based on physiological principles. Previously, it was believed that crowding had uniformly harmful effects on animals, except during hibernation or breeding. However, recent findings show that unorganized crowds can have beneficial effects, and this study seeks to understand these phenomena. The study focuses on the physiological and behavioral effects of crowding on organisms not yet considered socially integrated. It is important to understand the physiological basis of social behavior, as many social traits in humans and animals are not unique to them but are variations of common traits. The study also considers the ecological aspects of animal aggregations, including the interactions between organisms and their environment. The term "aggregation" is used to describe groups of animals that are not necessarily socially integrated. This term is used in contrast to "society," which refers to more organized groups. The study explores various types of animal aggregations, including those formed by physical contact and those formed without physical contact. It also discusses the classification of these aggregations, including accidental associations, primary and secondary associations, and other categories. The study also addresses the concept of instinct in animal behavior, noting that while instinct is often used to explain social behavior, it is not always the case. The study emphasizes the importance of understanding the physiological and ecological factors that influence animal aggregations. It also highlights the need for further research to better understand the complex interactions between animals and their environments.