We have been feeding her, Drs. Foster & Smith Chicken & Brown Rice Formula Senior dry dog food. No problems so far but she passes gas ALOT its like mustard gas WHEWWWWWW! Any way thats why we were thinking of changing.
ingredients:
Chicken, Brown Rice, Rice, Chicken Meal, Whole Barley, Beet Pulp, Rice Bran, Potatoes, Chicken Fat (naturally preserved with mixed tocopherols, citric acid, and rosemary), Natural Flavor, Sweet Potatoes, Carrots, Apples, Alfalfa, Brewers Dried Yeast, Whole Ground Flaxseed, Kelp, Egg Product, Potassium Chloride, Dicalcium Phosphate, Salt, Herring Oil, Vitamin E Supplement, Garlic, Sodium Ascorbate (source of Vitamin C), Dehydrated Lactobacillus acidophilus Fermentation Product, Dehydrated Bacillus subtilis Fermentation Product, Dehydrated Bifidobacterium thermophilum Fermentation Product, Dehydrated Bifidobacterium longum Fermentation Product, Dehydrated Enterococcus faecium Fermentation Product, Glucosamine, Chondroitin Sulfate, Choline Chloride, Zinc Proteinate (source of chelated Zinc), Iron Proteinate (source of chelated Iron), Zinc Sulfate, Iron Sulfate, Beta Carotene, Manganese Proteinate (source of chelated Manganese), Vitamin B12 Supplement, Manganese Sulfate, Niacin, Vitamin A Supplement, Cobalt Proteinate (source of chelated Cobalt), Calcium Pantothenate, Riboflavin Supplement, Copper Proteinate (source of chelated Copper), Vitamin D3 Supplement, Copper Sulfate, Thiamine Mononitrate, Ethylene Diamine Dihydriodide (source of Iodine), Pyridoxine Hydrochloride, Biotin, Folic Acid, Menadione Dimethylpyrimidinol Bisulfite (source of Vitamin K activity), Sodium Selenite.
So out of the first 4 ingredients there are only 2 meat sources and two grains are the second and third highest ingredients! Grains are known to cause gas. Dogs are not set up to digest them.
I say look to a better kibble (or raw! 
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