Pegomastax was almost certainly not a vampire. I mean, it had weird, elongated fangs, especially for an herbivore, but it was almost certainly a normal member of the Heterodontosauridae and not a vampire. Which is good, because if it were a vampire, it might well have survived all the way to the present day and then you’d have to worry about a vampire with 65 million or so years of experience coming after you when you slept.
With all that experience you would never hear it until it had those teeth in your throat.
This is the Queue. Don’t worry, there are no such things as vampire dinosaurs.
That’s right, I’m paraphrasing the Bhagavad Gita by way of J. Robert Oppenheimer.
We will now commence.