The cytological evaluation of blood, fluid, and tissue samples is a valuable aid in diagnosis within veterinary medicine. Reliable interpretation of carefully collected, well-preserved, representative cellular samples is of major importance for accurate diagnosis, prognosis, and treatment.

The fifth edition of Cowell and Tyler's Diagnostic Cytology and Hematology of the Dog and Cat is a comprehensible and practical reference book, intended to help the reader develop and enrich the necessary clinical laboratory and interpretative skills for a wide range of pathological conditions encountered in everyday practice, along with the rarer cases.

The aim of this book is to provide small animal clinicians and cytology students with the knowledge and skills required to apply cytodiagnostic techniques for sample collection, preparation, microscopic evaluation, and interpretation. It is designed to be user-friendly for the reader, one of the leading authoritative reference books and a guide for microscopy.

The numerous tables and diagrams accompanying the text contribute to shaping the reader's view of the field of cytology and, combined with cytological findings along with clinical signs and history, physical examination, diagnostic imaging, and other laboratory findings, the most accurate and specialized diagnosis is conducted in the shortest time and very effectively.

The fifth edition remains a practical diagnostic approach, as with previous editions. All chapters from the previous edition have been updated to include recently recognized conditions, new terminology, new procedures, and numerous new microphotographs. Histopathological microphotographs of normal morphology as well as selected pathological conditions have been added to enrich understanding of tissue structure related to cytology.

The authors hope that with the knowledge and skills that readers will gain, the time and frustration will be significantly reduced and, most importantly, the quality of care provided to patients and their companions will be improved.