"Initial Principles of Zoology" is a publication that opens the fascinating world of animals to the reader. The authors of the book, Bos and Ritsema, describe in detail the main aspects of behavior, anatomy and physiology of various representatives of the animal world. Thanks to illustrations and visual explanations, the reader will have the opportunity to study in depth the peculiarities of the structure of various types of animals. "Introductory Principles of Zoology" will be an excellent source of knowledge for everyone who is interested in the animal world and wants to expand their knowledge in this field.