crusnik
nothing eats vampires but a werewolf bite can kill a vampire
The name of the moth that eats blood is called the vampire moth
In folklore and mythology, vampires are often depicted as undead beings who were transformed through various means such as being bitten by another vampire, making a deal with the devil, or through a curse placed on them. Different cultures have different legends about how vampires are formed, but the common theme is that they were once human but are now creatures of the night with supernatural powers.
It comes down to your definition of the terms. I usually consider a cannibal to be one who eats flesh for its inherent nutrition. Your stereotypical vampire drinks blood primarily to steal life-force, not nutrition. Some vampires get digestible nutrition from the blood they drink but not all do.
An organism that eats other living things is called a predator.
A human who eats other humans is called a cannibal.
There are no known predators
An organism that eats other oranisms is called a heterotroph.
Nobody knows for sure what they eat but these are a few examples that they have been thought/known to eat shrimp, jellylike animals, prawns plankton, and small deep sea creatures.
An organism that eats other organisms for energy are known as heterotrophs.
This is because tuna eats other fish. Any animal that eats other animals is called a carnivore.