Hi Melissa,
definitely sounds like your boy has Food Sensitivities that is casuing yeasty skin & ears & bowel problems when he eats them, also can be Environment Allergies if his eyes are watering & he rubs his eyes, he’d feel very uncomfortable & itchy, now the hard part working out what ingredients he’s sensitive too that’s causing his yeasty ears & skin, once you work out which ingredients are causing his yeasty skin & ears the yeast will stop, I did an elimination food diet & carrots were causing Patches yeasty ears as soon as I stopped adding the carrots to his meal he stopped shaking his ears/head…
Have you tried “Taste Of The Wild” Sierra Mountain Roasted Lamb or TOTW Pacific Stream Smoked Salmon formula? these TOTW formula’s were the 2 grainfree kibble that helped my boy IBD & Food Sensitivities, then his yeasty skin went away, another grain Free kibble that worked for my boys IBD was”Canidae” Pure Wild Boar, these formula’s only have 1 meat protein with limited ingredients…
You need to find a kibble that helps his stomach & bowel (No gas & sloppy poos) like the Purina One works then hopefully the new kibble will help clear his yeasty ears & skin…
Look for a grain free formula that has Limited Ingredients, that is around 25% in Protein, Fat around 15% & fiber-4% & under not too high for fiber…
Some high end grain free kibbles are way too high in Protein & Fat % also the Kcals per cup are too high causing stomach/bowel problems, stay around 360Kcals per cup & under….
Look at the ingredients in the Purina One & try & avoid these ingredients as your dog is sensitive to either 1 or a few ingredients making his ears yeasty, the Purina One helps with his sensitive bowel but like my boy when he eats the Hills Sensitive Stomach formula he reacts & gets yeasty smelly skin & paws…..
Start bathing him weekly in “Malaseb” medicated shampoo, the Malaseb killls any yeast & bacteria on his skin & relieves any itchy skin leaving his skin & coat moist & soft…
There will be an kibble out there that he isnt sensitive too & helps his stomach, bowel & stops his yeasty ears you just haven’t found it yet… also have you tried “Natural Balance” LTD Sweet Potato & Bison or the Potato & Duck or Sweet Potato & Fish formula these N/B formula’s help dogs with stomach/bowel problems & have skin problems aswell, these N/B formula’s have NO peas, No chickpeas or No Lentils as these ingredients can cause gas, bad farts, sloppy poo’s & diarrhea….
Keep a diary & start writing down what brand kibbles your feeding & try & avoid any kibbles taht have chicken just incase he is sensitive to chicken…..also look at the ingredients & protein % in the high end grain free brands you’ve feed, was there any common ingredients that might of been causing his gas & sloppy poos, alot of these new grain free kibbles use Lentils & Chickpeas now, alot of dogs with IBS symptoms can not eat these ingredients causes bad gas & diarrhea.
