I know I have been giving the dogs more treats since being unemployed and home most of the time, but they each get the same amount and the bigger-statured dog has gained a TON of weight while the smaller one has not. This is a female, 9yo lhasa apso who went from about 22 pounds, which was about 2-4 pounds overweight, to 29 pounds and she still seems to be gaining. She has been seen by a vet twice in the past few months, although not specifically for the weight question. I haven't changed their brand of dog food and have cut treats in half. She goes outside and walks around the backyard and seems fine- just very overweight. Do female dogs get the middle aged bulge like women can? Do their metabolism change or should I be concerned about a more serious health problem causing this? It shouldn't be wworms because they are on preventative medications for fleas and I don't see her eating dog food any more than she had in the past.