Is it normal to be really turned on by vampire or werewolves?

Not how they look but let's say they go from looking human to transforming where the vampires fangs come out or the man transforms into a werewolf on screen. I get so unbelievably turned on I end up getting an O sometimes. Is this normal? This only happens when I watch it alone though. If I watch it in person I don't get that only in private when it's just me but I don't touch myself. I only get turned on by male vampire/werewolf transformations. I'm also a straight female

I could be sitting there eating ice cream, eating chips, not eating, drawing while watching the scene doing anything and I get so turned on I end up having an O sometimes more than one too if the scene is longer or if there's another scene shortly after where they transform again.