How bad is it? Misleading title. Fair to poor children's film.
Should you see it? No, though it's less painful to watch than many films I see.
I missed this for a while because I confused it with Dracula's Dog, but it has nothing in common with that film. Boy gets willed a talking dog (voice by Norm MacDonald) that just happens to be a vampire, who instead of blood is into red jelly. There's a battle of the bands to save the school - yes, this is the same movie. There's also a doctor who wants the dog's DNA for her beauty serum. The dog defeats the doctor's henchmen by hypnotizing them, which leads to acting like chickens and cats. This is all very banal, but preferable to most children's films on this list, particularly the Christmas ones.