What breed of dog is Togo

Toge in the film is a Siberian sled dog, but the pedigree is not pure, it should be a string. The film recalls Toge as a child said that Toge’s bloodline is not pure. The male owner also said to leave it and it would not contribute anything to this lineage of theirs. So it should be a string of Siberians and Alaskans. Eventually a new breed name was made for him, Seppala Siberian (Seppala Siberians).