This book, written for veterinary surgeons, veterinary students, and breeders, examines the various conditions of dogs that affect their ability to reproduce. The book contains the latest information on this issue. It summarizes the anatomy, physiology and endocrinology of the reproductive system of males and females, as well as methods for treating the most common diseases of this system. The purpose of this publication is to highlight the most significant aspects of therapy and surgery of pathological conditions that disrupt the function of reproduction of offspring.