I don't remember the first image of a werewolf I saw, but I suspect it was the hybrid type, up on two legs, with long limbs, hair, claw-like fingernails and lupine head. To me there's nothing scary about complete transformation from human into wolf. Wolves aren't scary. They're dangerous, yes, but so are geese, in the wrong mood. What's scary is seeing the human in the wolf but knowing it's beyond the reach of reason or emotional appeal. That's where the horror and dread kicks in.