New hope for dog obesity: What the latest research means

Obesity affects an estimated 59% of US dogs and drives higher rates of arthritis, diabetes, heart and lung disease, and certain cancers, while cutting years off a dog's life. Standard treatment for dog obesity — calorie restriction plus exercise — works in theory but is hard for owners to sustain. Two newer approaches are now being studied: a GLP-1 drug (liraglutide) and a gut-bacteria supplement…