By Carol McCarthy Whether dog or human, most physical exams start with hopping on the scale to be weighed. People rarely like this ritual, but dogs may not mind, especially if the vet rewards them with a treat. Sometimes, however, you might want to weigh your dog at home, between visits to the vet. Find out how—and why—you should weigh your dog at home, below. How Often Should I Weigh My Dog? Dr. Susan O’Bell, staff veterinarian at the Massachusetts Society for the Prevention of Cruelty to Animal’s Angell Animal Medical Center in Boston, suggests dogs be weighed at least once a year, while Dr. Matthew Rooney, owner of Aspen Meadow Veterinary Specialists in Longmont, Colo., says most pet parents can be satisfied with weighing their dogs every six months. In other cases, you might want to weigh your dog more frequently, depending on age and health conditions, they say. “For example, puppies should be weighed far more often, at least every three to four weeks for the first four to six months of life,” O’Bell says. Chronic medical conditions, particularly those that result in changes in appetite or water consumption (such as cancer or diabetes), require more frequent weight checks as well. Your veterinarian can recommend how often your dog should be weighed. If visits to the vet for weigh-ins are stressful for your dog, difficult for you to schedule or he has a chronic health issue, you can weigh your dog at home. “Many clients ask me if they can use their home scales,” O’Bell says. “I generally tell clients they can use home scales for basic trends, but any major discrepancies should be then confirmed on the hospital scale.”