This book, created by an international team of authors - authoritative experts in animal reproduction - reflects modern approaches used in breeding dogs and cats, all the main methods for diagnosing and treating reproductive disorders, and controlling the reproduction of these animals. The following issues are considered: normal physiology of dogs and cats; diseases of the reproductive system; infertility of females and infertility of males; normal functioning and dysfunction of the mammary glands; pairing; artificial insemination; the course of pregnancy and childbirth; care of newborn puppies and kittens, their hereditary and infectious diseases; technique of surgical interventions on reproductive organs; pharmacological control of reproduction. The book is called a guide - it is a guide due to the completeness of the coverage of the material, systematic presentation and pronounced practical orientation. Intended for veterinarians, students and teachers of veterinary faculties and academies.