Hi Allison, the black spots are yeast, a lot of people think grain free kibbles are the best, but they’re not, most of these grain free kibbles are higher in starchy ingredients like Potatoes, peas, tapioca, chick peas, lentils, etc… I’ve found that kibbles with Sweet Potato & Barley with no peas or Sweet Potatoes & Quinoa with no peas or another grain works better then these grain free kibbles with starchy potatoes, starchy peas, starchy tapioca, chick peas etc….
It’s very rare for dogs to be allergic to a protein…..Grains, Starchy veggies yes they’ll get itchy, smelly skin, red paws, itchy smelly ears, etc, you wrote “we tried different kibbles in the past” were they all grain free?? with starchy veggies ?? you changed the protein but did you change the ingredients?
Wash dog in Malaseb medicated shampoo weekly until the scratching goes & the black spot start to go away..Malaseb is an anti-bacteria shampoo….a dog probiotic will also heap strengthen the good bacteria in the gut & make the immune stronger to fight off any yeast over growth..
Try & feed something else besides kibble, “The Honest Kitchen” Zeal is low in carbs…. or the Honest Kitchen has their Base Mixes & you add your own meat… http://www.thehonestkitchen.com/dog-food/zeal
K-9Natural Freeze Dried is also very low in carbs… Ziwi Peak another excellent Wet tin or air dried food your dogs will love Ziwi Peak its expensive but worth it.. http://www.ziwipeak.com/
there’s a heap of really good foods around instead of kibbles…. Kibbles need the carbs to bind the kibble….
