Hi, is it his teeth or his breath that stinks…after brushing his teeth try to smell his breath about 2-4 hours after eating. My boy had real bad breath after eating, he ended up having stomach bacteria & was put on Metronidazole for 2 weeks, the Metronidazole has cleared his bad breath, now I give him a probiotic daily, also like Anne R has said about being too much fat maybe the food is just sitting in his tummy.. My boys kibble was just sitting in his tummy as he’d vomit it up 7 hours later all still formed kibbles & that was a high fat kibble that he was eating at the time that lead to the stomach bacteria..You could mix 2 tablespoons of greek yogurt thru his meals & see if that helps….
