I'm a dog boarder and have looked after a few labs that are overweight. Have one currently who was taken to the vet before coming here for a check up of vaccines etc and he was concerned. he apparently suggested a hydrotherapy pool and a treadmill. He always asked me to cut down her food intake. She's 11. Do you know why this is such a common problem in labs? Is it just what the owner feeds them or is it a genetic factor?