Can you prove this dog is pure? You have another post where you're asking for input on whether other people think your dog looks like a purebred, so you yourself don't seem very sure.
Honestly, looks like a Tamaskan to me but I don't know the pedigree of your dog (not saying it IS a Tamaskan, just saying that's what it makes me think of.)
Can you stack the dog so we can see?
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MacKenzie - Workling Line Female (In Loving Memory)
Wolfram - West German Showline Male [SG1, CGC, DDN, CN, EN, IN, VN]
Bash - Working Line Puppy