Most Chow mix usually still has black tongue. I think yours is a mix of German shepherd (the muzzle) and golden (the ears). ^^
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The eyes appear shepherd. If those are gray/blue/black marks on the tongue, it can be an indication of chow chow.
Not all chow mixes have black tongues or spots. ;) It doesn't indicate they have chow in them.. My friend's golden retriever has a spot on his tongue and he's purebred. My Rottweiler mix, Jenny (RIP) had a spot on her tongue and was no way a chow.