Nothing, I have a cat. She feeds herself.
There is a dog food rating website. It breaks the brands down, to show what is good in them, and what is bad for your dogs. It is a good website with tons of info on all dogfoods. Also breaks the reports into dry brands and canned foods. Mikey
A bit off topic, but I might take a second look at his cough. My female Rottie, and fishing buddy, Gretchen, developed a cough at about 11 years old. Vet examined her, and said not to worry, probably an allergy.
She got worse, and went down hill fast. Another vet examined her, and diagnosed heart failure, too late to treat. A proper diagnosis at the start could have been treated with meds, and at least made her more comfortable.
Larry
Dogs need basic food. Genetically they are scavengers and those who feed their dogs anything but the most basic of dog foods are doing it more to please themselves than for the sake of their dog.