Biology of reproduction provides a complete and an integrated approach to the subject of essentials of mammalian and human reproductive system and processes. The book covers both introductory and fundamentals concepts of development, anatomical, hormonal, physiological, nutritional and biochemical reproductive biology along with the knowledge of family welfare, poultry and cattle breeding. The text in the book is well supported by tables and diagrams. The book is based on the forty-two years long experience of teaching undergraduate and postgraduate students, extensive research works. Whereas the book covers the entire syllabus for an undergraduate degree by mostly Indian universities, it is also aimed at providing a solid foundation in the field of postgraduate and research level students.