Oliver has loose poops
Hello, my dog Oliver is a rescue and about 11 months old. He was a shelter dog when we adopted him at around 9 months old, and was a stray before that. He is a shepherd/collie mix I think. At the shelter he was fed a mixture of any food they were donated. Upon getting him, we gave him Eukanuba large breed puppy formula (although I don't think he is quite large enough to be a large breed), and then he was switched to Nutreco Lifetime Chicken and Oatmeal formula. Once switched to adult foods he started to get loose stools. When we bring him to the dog park he will poop multiple times, all are loose, and he will go until there is absolutely the tiniest poop left. He totally empties his bowels when he plays. Since, we have put him on Halo, Purely for Pets Salmon formula because the ingredients looked good. What can we do to help him with his problem? Is this a food problem? Or could it be something else?
Ingredients for Eukanuba Large Breed Puppy Formula: (Chicken, Corn Meal, Chicken By-Product Meal (Natural source of Chondroitin Sulfate and Glucosamine), Ground Whole Grain Sorghum, Brewers Rice, Dried Beet Pulp, Chicken Flavor, Dried Egg Product, Fish Oil (preserved with mixed Tocopherols, a source of Vitamin E), Brewers Dried Yeast, Fish Meal, Potassium Chloride, Chicken Fat (preserved with mixed Tocopherols, a source of Vitamin E), Salt, Calcium Carbonate, Choline Chloride, Fructooligosaccharides, Minerals (Ferrous Sulfate, Zinc Oxide, Manganese Sulfate, Copper Sulfate, Manganous Oxide, Potassium Iodide, Cobalt Carbonate), DL-Methionine, Vitamins (Ascorbic Acid, Vitamin A Acetate, Calcium Pantothenate, Biotin, Thiamine Mononitrate (source of vitamin B1), Vitamin B12 Supplement, Niacin, Riboflavin Supplement (source of vitamin B2), Pyridoxine Hydrochloride (source of vitamin B6), Inositol, Vitamin D3 Supplement, Folic Acid), Vitamin E Supplement, Marigold, Beta-Carotene, Rosemary Extract.)
Ingredients for Nutreco Lifetime Chicken and Oatmeal: (Chicken Meal, Oatmeal, Whole Barley, Chicken & Turkey Fat (preserved with mixed tocopherols, a source of Vitamin E), Canola Meal, Whole Brown Rice, Flaxseed, Natural Flavours, Herring Oil (source of DHA/EPA), Sodium Chloride, Potassium Chloride, Calcium Carbonate, Dicalcium Phosphate, Mannanoligosaccharides (MOS), Chicory Inulin (FOS), Yucca Schidigera Extract VITAMINS Vitamin supplements (A,D,E), Niacin, Calcium Pantothenate, Riboflavin, Thiamine Mononitrate, Biotin, Pyridoxine Hydrochloride, Vitamin B12, Folic AcidMINERALS Zinc Sulphate, Ferrous Sulphate, Calcium Iodate, Sodium Selenite, Chelated Minerals (Zinc, Copper, Manganese, Iron), Manganese Sulphate, Copper Sulphate)
Ingredients for Halo, Purely for Pets Wild Salmon Spot's Stew: (Salmon, Eggs, Pea Protein, Oats, Vegetable Broth, Pearled Barley, Chicken Fat (preserved with mixed tocopherols and citric acid), Whole Peas, Chicken Liver, Chicken, Flax Seed, Salmon Oil (preserved with mixed tocopherols), Sweet Potatoes, Apples, Blueberries, Green Beans, Carrots, Cranberries, Zucchini, Alfalfa, Inulin, Calcium Sulfate, Potassium Chloride, Taurine, Salt, Vitamins (Folic Acid, Vitamin A Supplement, Vitamin D3 Supplement, Vitamin E Supplement, Vitamin B12 Supplement, Choline Bitartrate, Niacin, d-Calcium Pantothenate, Ascorbic Acid, Riboflavin Supplement, Thiamine Mononitrate, Pyridoxine Hydrochloride, Biotin), Minerals (Zinc Proteinate, Iron Proteinate, Cobalt Proteinate, Copper Proteinate, Manganese Proteinate, Magnesium Proteinate, Calcium Iodate, Sodium Selenite), Dried Lactobacillus acidophilus Fermentation Product, Dried Bifidobacterium longum Fermentation Product, Dried Enterococcus faecium Fermentation Product, Dried Lactobacillus plantarum Fermentation Product.)