Roberto Elices Minguez In teh field of human medicine, obesity in developed countries is considered a 21st century epidemic by the World Health Organization. Current data on obesity in dogs and cats suggest a similar pattern in veterinary medicine. Althought widespread and easy to diagnose, many aspects of obesity are misunderstood. This book offers practical and clear information about obesity in companion animals, allowing the clinician to evaluate the patient´s condition and identify comorbidities, and providing them with the tools necessary to implement an effective control and prevention programme in which the owner participates.