The principles of diagnostics and clinical staging and of the main therapeutic modalities are outlined. Individual tumour types in the body systems of dogs and cats are then described, using a common approach to aid information retrieval on aetiology and pathogenesis, presentation and clinical signs (including staging/grading of tumours), management , and prognosis. A wealth of new photographs has been included to illustrate the clinical, diagnostic and therapeutic aspects of a range of tumours.

The growing importance of ethical considerations and palliative care are also recognized, and exciting developments and treatment possibilities explored.