Muroni
The muroni is a vampire from the region of Wallachia that changes shape and can appear in the form of a cat, a toad, or perhaps a spider or a supernaturally sinister dog.
It typically feeds on the blood of the living, and when someone discovers it in its grave, very long nails and traces of fresh blood can be seen around the eyes, nose, ears and mouth.
To kill the muroni, a stake must be driven through its heart.