It amazes me sometimes that honestly whenever you see an obese animal, 9 times out of 10, the owner is just as fat.  There are exceptions.  A few girls I know for some reason have these male cats that are always 30 pounds, and I swear they are always of a certain type of personality and they always are stick thin while eating whatever they want.  I hate it, maybe they are just into their opposites.  But for some reason, I would swear those cats are always schizophrenic.  I lived with one, and I spent half my days in there hiding from the cat in my room as it would walk outside my door waiting to get me.  But anyway, in most cases, these people overfeed their dogs just as they do themselves, and they often give them table scraps which don’t consist of carrots or anything, which are actually really good for dogs.  They consist of not good meats, but the fatty parts of meats that they think are good.  They consist of generally fatty foods, and then they let them eat more.  Sometimes my dogs gets scraps from meat and some carrots every once in a while.  But I’ve had trouble in the past maintaining a high enough weight with him, and frankly enough when he gets those kinds of meals, they are much more packed with certain things, so that is his dinner, period, end of story.  It’s also not a regular thing at all.  So change your habits and your pet’s.  And frankly if you have a dog go out on walks with it, it helps.