Muroni
The muroni is a vampire in Wallachian mythology. It has the ability to transform into a variety of different animals. Due to this characteristic, a muroni attack could be very hard to identify and could often be thought of as an animal attack. The only sign that a muroni was there at all was an exceptional amount of blood loss.
While the muroni was often thought to be a vampire, it can also be considered a shapeshifter, as it would take on the appearance of animals. The muroni is one of many vampire legends which was believed to be a blood-sucking ghost in reality, only taking on the form of other beings to make feeding easier.