Canine obesity is a growing concern in the veterinary field, with around 33% of adult dogs worldwide reported to be obese. Obesity is a multifactorial condition, with the main factor being excessive caloric intake coupled with inadequate energy expenditure. In addition, obesity has both genetic and environmental influences, such as breed, sex, age, geographical location, and owner behavior. Canine obesity is associated with a variety of diseases, including metabolic dysfunctions, respiratory distress, exercise intolerance, OA, orthopedic injuries, dermatological diseases, neoplasia, anesthetic complications, and decreased longevity. Treatment and management of obesity requires an individualized approach, taking into consideration the health status of the patient i.e., comorbidities and capability, the current diet, and the owner's participation. Owner compliance is essential to a weight loss protocol and its success and can pose a challenge to the veterinarian while treating an obese patient; thus, continuous monitoring and guidance with good communication between the owner and the veterinary practitioner is key and needs to be emphasized. Restriction in caloric intake has been shown to be successful by itself. However, the integration of PA in weight loss protocols in different forms and intensities, either by increasing the distance of the daily walk, interactive playing activities, or by applying PT tailored modalities such as hydrotherapy, demonstrated to be beneficial in weight loss, preservation of LBM, and improvement in the QOL.