Bunnicula, The Vampire Rabbit
Hmm, this looks promising.
Bunnicula, The Vampire Rabbit is an animated special from 1982, and the title doesn’t lie: It really IS about a vampire rabbit.
(…albeit one who only sucks vegetable juice.)
I’m not an expert on Bunnicula lore, but I assume the series of books is way more famous than this mostly-forgotten TV special. Kinda excited to check it out. Join me.