I can see what you mean. Its like comparing Benadryl with the Equate brand. However, these are the same drug, diphenhydramine hydrochloride. Just packaged in different labels and charge you double for the name brand stuff.
However with this dog/cat food situation, it is different. I went to both Nutro and Iams websites and found Canned cat food, the Ocean Fish flavor, to show that they are not the same product, even though manufactured at the same place.
Nutros Natural Choice Complete Care Adult Ocean Fish and Tuna
Fish Broth, Mackerel, Chicken, Tuna, Chicken Giblets, Lamb Liver, Wheat Gluten, Beet Pulp, Sunflower Oil, Dried Egg Product, Glycine, Guar Gum, Menhaden Fish Oil, Herring Meal, Salt, Potassium Chloride, Brewers Dried Yeast, Sodium Carbonate, DL-Methionine, Sodium Ascorbate (source of Vitamin C), Taurine, Chicory Extract, Choline Chloride, Vitamin E Supplement, Vitamin A Supplement, Vitamin B12 Supplement, Vitamin D3 Supplement, Thiamine Mononitrate, Niacin, d-Calcium Pantothenate, Pyridoxine Hydrochloride, Folic Acid, Biotin, Ferrous Sulfate, Zinc Oxide, Copper Proteinate, Manganous Sulfate, Potassium Iodide, Sodium Selenite.
Guaranteed Analysis
Crude Protein (minimum) 8.00%
Crude Fat (minimum) 5.00%
Crude Fiber (maximum) 1.00%
Moisture (maximum) 82.00%
Ash (maximum) 2.50%
Linoleic Acid (minimum) 0.70%
Magnesium (maximum) 0.022%
Zinc (minimum) 50 mg/kg
Vitamin E (minimum) 50 IU/kg
Taurine (minimum) 0.05%
Docosahexaenoic Acid (DHA) (min.)* 0.012%
Ascorbic Acid (minimum)* 10 mg/kg
Iams Ocean Fish Entree Adult
Ingredients
Meat Broth, Ocean Fish, Beef Liver, Chicken, Brewers Rice, Dried Egg Product, Fish Oil (preserved with mixed Tocopherols), Ground Whole Grain Barley, Dried Beet Pulp (sugar removed), Guar Gum, Salt, DL-Methionine, Potassium Chloride, Brewers Dried Yeast, Flax Meal, Vitamins (Vitamin E Supplement, Vitamin A Acetate, Vitamin D3 Supplement, Vitamin B12 Supplement, Thiamine Mononitrate (source of vitamin B1), Niacin, Calcium Pantothenate, Pyridoxine Hydrochloride (source of vitamin B6), Riboflavin Supplement (source of vitamin B2), Folic Acid, Biotin), Minerals (Ferrous Sulfate, Zinc Oxide, Copper Proteinate, Manganous Sulfate, Potassium Iodide, Sodium Selenite), Choline Chloride, Taurine, Caramel, Titanium Dioxide, Tricalcium Phosphate
Nutrient (percent)
Crude Protein not less than 10.00 %
Crude Fat not less than 5.50 %
Crude Fiber not more than 0.50 %
Moisture not more than 78.00 %
Ash not more than 2.20 %
Magnesium not more than 0.025 %
Taurine not less than 0.05 %
Omega-6 Fatty Acids not less than 0.80 %*
Omega-3 Fatty Acids not less than 0.10 %*