This book covers most of the topics with latest information on canine cancer in general and canine mammary cancer in particular. The book is divided into 21 chapters covering almost all aspects of canine cancer including its overview, occurrence, etiology, classifications, polymorphism, radiological-immuno-hormonal-sex hormone profiles, enzymatic-genetic-tissue prognostic markers and different modern diagnostic and therapeutic approaches. This book also includes different research findings on canine mammary cancer. The main objective of this book is to provide the latest information to meet the requirements of not only undergraduate and post-graduate students but also to the teachers and clinicians involved in canine practice. The book contains more than 150 good quality colour photographs of canine cancer, cancer diagnosis and cancer treatments. This book would be of immense use to the students, teachers and practitioners engaged in the field of cancer research and treatment.