Here is the lowdown. I used to be a manager at a PetSmart.
Corn, whey, soy are all fillers meant to literally fill the dog up without using expensive ingredients such as chicken, beef or other meats.
If you can, buy food that does not have corn or corn meal listed in the first 5 ingredients. Those are the best foods for doggie. But you can't always get those foods so the farther down the list corn is, the better. They will be hungrier more often and have much more waste on grain based foods than meat based foods. And the levels of crude protien and fat are far less in grain based.
Also, many dogs have a sensitivity to wheat and corn (believe it or not!) because dogs are not MEANT to eat it! They are carnivors, not vegitarians.
Science Diet, Eukunuba, Iams....all more expensive foods and really in the end no better than most cheap kibble out there. They contain a lot of filler. They aren't BAD foods. Just not the best you can get for your money and they've always been touted as being good dog foods.
Just to show you the difference in cost of food....
Let's pick Purina Dog Chow, a pretty cheap food.
Quote:Ground yellow corn, poultry by-product meal, animal fat preserved with mixed-tocopherols (form of Vitamin E), corn gluten meal, brewers rice
Protien 21%
Fat 10%
A better choice but not the best choice is Iams.
Quote:Chicken, Corn Meal, Ground Whole Grain Sorghum, Chicken By-Product Meal, Chicken Fat
Protien 26%
Fat 15%
This is a grain based food and therefor not the
best for your dog.
Better than Chow but not as good as the next food.
Nutro is a decent food. About comparable to Iams in price and on the whole I'd say a smidgen better than Iams in quality.
Quote:Chicken Meal, Ground Rice, Rice Flour, Corn Gluten Meal, Rice Bran, Dried Beet Pulp, Wheat Flour, Poultry Fat
Protien 26%
Fat 12%
Chicken Soup for the Pet Lovers Soul (cheesy, I know) is a
great food for the price.
Quote:Chicken, turkey, oatmeal, whole grain brown rice, chicken meal, turkey meal, whole grain white rice, chicken fat
Protien 24%
Fat 14%
Shewolf just told me it's $18 for a $50 bag there!!!!!!
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Just read the lables. Dry food is cheaper and better for your dog than wet food. Keeps their teeth healthy and their stools nice and firm (I know, fun isn't it?) Watch out for fillers. You want about 25% crude protien and 15% crude fat.