Bunnicula is a 1982 animated TV special from Ruby-Spears, it is based on the 1979 children’s book by James and Deborah Howe entitled Bunnicula: A Rabbit-Tale of Mystery. The animated special deviated heavily from the novels and actively depicted Bunnicula using vampiric powers, which did not occur in the novels.
Bunnicula is a vampire bunny that sucks the juice out of vegetables and the story centres around the Monroe family and their pets and is told from the perspective of their dog Harold. The Monroes find a bunny at the theatre where they were watching a Dracula film. Because of this, they name him Bunnicula. Their cat Chester, however, is convinced Bunnicula is a vampire and attempts to get Harold (the dog) to help save the Monroes from the perceived menace.