Here are the key elements of the conflict:
* Harold, the family dog, is terrified of Bunnicula. He believes Bunnicula is a vampire and is actively trying to warn the family about the danger.
* Chester, the family cat, is suspicious of Bunnicula but open to the possibility of a rational explanation. He wants to understand the situation and find a way to coexist.
* The family, particularly the young boy, Toby, are initially curious about Bunnicula and unsure of what to make of him. As the strange happenings continue, they slowly start to believe Harold's warnings.
* The real nature of Bunnicula: While Harold believes Bunnicula is a vampire, it's later revealed that Bunnicula is a vegetarian with a unique ability to drain the chlorophyll from vegetables, which makes him turn white and gives him vampire-like qualities. This revelation leads to the resolution of the conflict.
The story explores themes of fear of the unknown, prejudice, and the importance of understanding.