This book comparatively examines the etiopathogenetic, clinical-pathological, diagnostic and therapeutic strategies of the main bone tumors of domestic animals. The book also includes a description of the most significant aspects of macroscopic, microscopic, immunohistochemical, instrumental, diagnostic imaging and molecular biology aspects of spontaneous bone tumors in Veterinary Medicine, with also interspecies comparative aspects, including the human one. Last but not least, the book provides an overview of the new diagnostic and therapeutic frontiers related to the approach to animal bone tumors. The book serves as essential reading for professionals, researchers and students who work or want to tackle three paths in the field of comparative veterinary bone oncology.