This book is written for undergraduates and invaluable for graduates wishing to brush up. The general and most important impression is that, this book leaves aside the unnecessary anatomical terminologies and presents the embryology in more lucid and in easy way. The book is written in two parts as Domestic Animal Embryology (from gametes to organ formation) as part I and Domestic Animal Embryology (the development of the organ systems) as part II. This book provides base level embryological information to the beginners who may find difficulty in understanding the embryological processes through the terminology of molecular and gene level. The chapters written in this book contain the information obtained from authentic and reliable resources highly acknowledged in the book. This book abundantly illustrates the complex embryological process through hand drawn illustrations and by combinations of coloured and black and white images which are easy to follow and clear. A complete chapter on history, discoveries and terminology of embryology has been presented keeping in view the essentiality of these things for better and clear understanding of embryology. I hope this book (part I and part II) may provide a narrative understanding of embryology. Suggestions and critiques from professionals, students, and clinicians are welcome and will be used to check factual accuracy as well as balance in the text.