The book "Comparative and ecological physiology of animals" by O. A. Botyazhov is an exciting and deep dive into the world of animal physiology, which will become an indispensable tool for students, graduate students and anyone interested in biology and ecology. Published by P. Yaroslavl State University G. Demidova, this work offers readers a unique perspective on how different animal species adapt to their environmental conditions, making it relevant to study within biological and environmental disciplines. The book covers a wide range of topics related to physiological processes occurring in animal organisms. The authors investigate how various environmental factors, such as temperature, humidity, food availability, and others, affect the physiological functions of animals. In this context, both aquatic and terrestrial animals are considered, allowing the reader to see the full variety of adaptations that have evolved over the course of evolution. The book pays special attention to comparative analysis, which helps to identify general patterns and differences in the physiology of different groups of animals. This makes the text not only informative, but also intriguing, as the reader can independently draw parallels and draw conclusions about how life on Earth is diverse and multifaceted. The book will be of interest not only to students of biological specialties, but also to teachers, researchers, as well as everyone who is fond of nature and wants to understand more deeply how animals interact with the environment. It is suitable for both young and more mature readers who want to expand their knowledge in the field of ecology and physiology. Topics raised in the book are relevant and important in light of contemporary environmental issues. Understanding animal physiological adaptations can help develop effective strategies for protecting the environment and conserving biodiversity. In the face of global climate change and loss of natural habitats, knowledge of how animals respond to change is becoming particularly valuable. The author's style is characterized by accessibility and clarity of presentation, which allows even complex scientific concepts to be presented in an understandable form. About. A. Botyazhov is an experienced teacher and researcher who has already established himself in the field of biology and ecology. His previous work has also focused on animal adaptation and their interactions with the environment, making him an expert in the field. If you are looking for literature that will help you better understand the world of animals and their physiological processes, then "Comparative and ecological physiology of animals" will be an excellent choice. This book will not only enrich your knowledge, but also inspire further research in biology and ecology. Do not miss the opportunity to touch the science that opens the doors to the amazing world of wildlife!