Loki refuses to eat. He'll nibble a bit out of his bowl, but then not touch it again. We can leave it down for hours, he won't touch it. We change his food to something different, a different flavor, or a different formula, nothing. We work at a dog groomer/boutique. We have access to some of the most expensive food on the market. We have tried Ziwi Peak, Fromm, Wild Calling... you name it, he won't eat it. Today he had a hunger puke. We don't know what to do. He gets a mix of wet food and dry, and sometimes we add a little people food just to get him to touch it, and sometimes that doesn't even work. He gets two attempts at meals a day. We are at our wits end!! I have no idea what to do now. Help!