They are both protein-focused and grain-free dog foods.
Here are the ingredients for Wellness CORE:
Deboned Turkey, Deboned Chicken, Turkey Meal, Chicken Meal, Potatoes, Dried Ground Potato, Tomato Pomace, Natural Chicken Flavor, Canola Oil, Chicken Liver, Salmon Oil, Flaxseed, Carrots, Sweet Potatoes, Kale, Broccoli, Spinach, Parsley, Apples, Blueberries, Vitamins & Minerals, Chicory Root Extract, Yucca Schidigera Extract, Glucosamine Hydrochloride, Chondroitin Sulfate, Dried Lactobacillus plantarum, Enterococcus faecium, Lactobacillus casei, Lactobacillus acidophilus Fermentation Products, Rosemary Extract.
Now Blue Wilderness (made by Blue Buffalo):
Deboned Chicken, Chicken Meal, Potato Starch, Turkey Meal, Whitefish Meal, Salmon Meal, Tomato Pomace (natural source of Lycopene), Chicken Fat (preserved with Natural Mixed Tocopherols), Oatmeal, Natural Chicken Flavor, Whole Carrots, Whole Sweet Potatoes, Blueberries, Cranberries, Flaxseed (natural source of Omega 6 Fatty Acids), Barley Grass, Dried Parsley, Alfalfa Meal, Kelp Meal, Taurine, L-Carnitine, L-Lysine, Glucosamine Hydrochloride, Yucca Shidigera Extract, Green Tea Extract, Turmeric, Herring Oil (natural source of Omega 3 Fatty Acids), Fructooligosaccharides, Monooligosaccharides, Dried Chicory Root, Black Malted Barley, Oil of Rosemary, Beta Carotene, Vitamin A Supplement, Vitamin C, Vitamin E Supplement, Vitamin D3 Supplement, Calcium Ascorbate (source of Vitamin C), Vitamin B12 Supplement, Niacin (Vitamin B3), Calcium Pantothenate (Vitamin B5), Riboflavin (Vitamin B2), Pyridoxine Hydrochloride (Vitamin B6), Thiamine Hydrochloride (Vitamin B1), Folic Acid, Biotin, Choline Chloride, Calcium Chloride, Zinc Amino Acid Complex (source of Chelated Zinc), Iron Amino Acid Complex (source of Chelated Iron), Copper Amino Acid Complex (source of Chelated Copper), Manganese Amino Acid Complex (source of Chelated Manganese), Potassium Amino Acid Complex (source of Chelated Potassium), Cobalt Proteinate (source of Chelated Cobalt), Potassium Chloride, Calcium Carbonate, Sodium Selenite, Salt, Lactobacillus acidophilus, Bacillus subtilis, Bifidobacterium thermophilum, Bifidobacterium longum, Enterococcus faecium.
Guaranteed Analysis (Wellness CORE:)
Crude Protein min. 34%
Crude Fat min. 14%
Crude Fiber max. 4%
Moisture max. 10%
Calcium max. 2%
Phosphorus max. 1.4%
Vitamin E min. 150 IU/kg
Omega 6 Fatty Acids* min. 3.25%
Omega 3 Fatty Acids* min. 0.70%
Glucosamin Hydrochloride* min. 250 mg/kg
Chondroitin Sulfate min. 200 mg/kg
Total Micro-organisms* min. 80,000,000 CFU/lb
Guaranteed Analysis (Blue Wilderness):
Crude Protein 42.0% min
Crude Fat 16.0% min
Crude Fiber 3.0% max
Moisture 10.0% max
Calcium 1.0% min
Phosphorous 0.9% min
L-Carnitine* 100 mg/kg min
Omega 3 Fatty Acids* 0.25% min
Omega 6 Fatty Acids* 3.50% min
Beta-Carotene* 5.0 mg/kg min
Glucosamine* 400 mg/kg max
They are around the same price, but I have to drive farther to buy Blue Wilderness. Wellness CORE is available at a local pet store that’s a 5-minute drive from my home, whereas Blue is at least 15-20 minutes (It’s at Petsmart.)
Also…. Do you think the high protein content in Blue Wilderness is something to be concerned about?
oopsies, my mistake. Didn’t see the oatmeal. 
