Both of the parents have a black mask, it's just not strong. Masking is dominant, so if both parents have it all of the pups will have a black mask unless they both carry the gene marker for no mask, then about 1/4th the litter could have no mask. But you don't see maskless GSDs very often.
Intensity/strength of the mask will vary and depends on what the parents have produced in the past.
Dakonic German Shepherds
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