^I think all wanderer's dogs use Dogmeat's Model... not sure, but i heard it somewhere that they do... plus i once saw another dog with heterochromia, and it wasn't dogmeat. it was a wanderers dog
Popebug said: It can't be the Lone Wanderer, since she's not wearing a Pip-Boy.
Artist's tag confirms he intended the dog to be Dogmeat. (I say intended because the dog has no heterochromia.) As for the human, the lack of a pip-boy he(she?) is not the lone wanderer and the artist tag has nothing to indicate it. Removing the lone wanderer tag.