I wouldnt say the dog is a chow mix because of the tongue. Over 30 pure breeds of dogs have spotted tongues.
Airedale, Akita, Australian Cattle Dog, Austrailian Shepherd, Belgian Sheepdog, Belgian Tervuren, Belgian Malinois, Bichon Frise
Bouvier de Flandres, Bull Mastiff, Cairn Terrier, Chinese Shar-Pei, Collie, Cocker Spaniel, Dalmatian, Doberman Pinscher,
English Setter, Eurasier, Fila Brasileiro, Flat-coated Retriever, German Shepherd, Golden Retriever, Gordon Setter, Great Pyrenees,
Irish Setter, Kai Ken, Keeshond, Korean Jindo, Labrador Retriever, Mastiff, Mountain Cur, Newfoundland, Pomeranian,
Pug, Rhodesian Ridgeback Rottweiler, Shiba Inu, Siberian Husky, Tibetan Mastiff, Thai Ridgeback
these are all breeds that can have spotted tongues.
anyway, now that that's out of the way. Its defiantely a spitz type breed. Looks most like a Shiba Inu to me.