A few friends wrote and performed a rock opera (in their words, a “Rock & Roll Mythology”) about a demonic moose from the back woods of Vermont that feasts on the blood of virgins (or maybe it was that it feasted on the blood of the sinful, and could only be stopped by a virgin; I don’t quite remember).
The tale actually would make a great movie; it basically followed a lot of horror film tropes.
There was a French-Canadian film short called L’Excursion with a never-seen beast stalking the protagonists. It is suggested that the beast is some kind of mutant moose (you see its antlers at the edges of its field of vision in the “moose-vision” shots). You can see the film here.