My parents have a 9 year old GSD Mix (Toby), and is about 25 lbs over weight, and has had two surgeries on the same leg (once her leg was broken, the 2nd was a toren ACL) and they bring home a "Doggie Bag" for her when ever they go out. It drives ME NUTS!!!!!!!!!!!!!! I preach to them everyday.... but just like I was when I was young...... it goes in one ear and out the other!
(I guess It's pay back!!)
With my two GSD's, and worring about there hips, ours do not get table scraps. There fav treats are Ice Cubes!!! Both are still underweight. Sierra could gain 10 lbs and Buddy....well...were still fighting with worms... but once those are gone, he needs to gain 15 lbs.