Question: what ingredients are harmful to dogs?
Answer: BHA/BHT. These chemical preservatives are used to preserve fats in human and pet foods. ... 
White Flour. White flour is a simple carbohydrate with most (if not all) of its nutrition stripped. ... 
Meat and Meat Meal. ... 
Artificial Colours. ... 
MSG. ... 
Gluten. ... 
Corn Syrup. ... 
Farmed Salmon.