Canine obesity is the most common preventable welfare problem in pet dogs, causing or worsening joint disease, cardiovascular problems, and shortened lifespan.
Canine obesity causes insidious, chronic welfare harm that is often invisible to owners until it becomes severe. Overweight dogs move less because movement is uncomfortable — and reduced movement causes further muscle loss and joint deterioration. The cycle of weight gain, pain, reduced activity, and further weight gain is self-reinforcing. Dogs cannot advocate for dietary restriction; owners must take responsibility. The connection between obesity and lifespan — nearly two additional years for lean dogs in controlled studies — is perhaps the most powerful argument for weight management as a welfare priority. Yet feeding dogs extra food often comes from love, making dietary restriction emotionally difficult. Reframing treats as training opportunities, using food toys, and engaging veterinary support makes weight management achievable.