This is my 3nd GSD, just like my 1st and 2nd one, it seems you have to Bribe him to eat.
After a 3-4 weeks of the same dogfood you have to entice him with added flavors like eggs, gravy, bacon grease, cheese, etc. to his food.
None of the other breeds I have had in 50 years did they need Bribing to eat.
Anyone else have this happen with their GSD or any other breed