I thought the traditional form of a familiar was a cat, usually black? Or at least both have been used at different times...
Might as well called it "summon wolf "
As for traditional familiar it depends on what region you're looking at, it could range from crows,snakes, cats to goats, bears ect. There really is no animal that could not be considered for a spot as a familiar.
The black cat familiar is something that was coined in Europe and made famous in cases with the Witch Trials throughout Germany/England and France where it mainly took place.
As for Norse/Northern Europe mainly wolves, crows/ravens, foxes.