The subspecialty within veterinary medicine which deals with the diagnosis of cancer in animals as well as its treatment is known as veterinary oncology. Due to a large number of deaths in pet animals being caused by cancer, veterinary oncology is an important field of study within veterinary medicine. Many animals such as cats and dogs suffer from similar cancers as humans. Thus, advances in veterinary oncology and human cancer research complement each other in a way which benefits both animals and humans. There are various treatments which are used to cure and control cancer in animals such as surgery, chemotherapy and radiation therapy. This book includes contributions of experts and scientists which will provide innovative insights into this field. It provides significant information of this discipline to help develop a good understanding of veterinary oncology and the advances which have been made in it.