Dog Food Max

When your dog doesn’t eat his favorite food anymore?
My dog used to eat the eukanuba mini chunks dog food. He has since stopped eating it. I leave it out for 2 days (max) and not a bite taken out of it. I know he isn’t sick, because he is eating other dog’s dogfood when he gets a chance. Should I change the dog food, and if so to what? Please help.
Yeah Thats What Happened To My Dog U Should Change Types Of Dog Foods Every 6 Months They Lose Flavor Of Them After A While.
Max the Doberman – reviews Iams Weight Control Dog Food