Creating and Identifying Vampire

The causes of vampiric generation were many and varied in original folklore. In Slavic and Chinese traditions, any corpse that was jumped over by an animal, particularly a dog or a cat, was feared to become one of the undead. A body with a wound that had not been treated with boiling water was also at risk. In Russian folklore, vampires were said to have once been witches or people who had rebelled against the Russian Orthodox Church while they were alive.

Cultural practices often arose that were intended to prevent a recently deceased loved one from turning into an undead revenant. Burying a corpse upside-down was widespread, as was placing earthly objects, such as scythes or sickles, near the grave to satisfy any demons entering the body or to appease the dead so that it would not wish to arise from its coffin. This method resembles the Ancient Greek practice of placing an obolus in the corpse's mouth to pay the toll to cross the River Styx in the underworld; it has been argued that instead, the coin was intended to ward off any evil spirits from entering the body, and this may have influenced later vampire folklore. This tradition persisted in modern Greek folklore about the vrykolakas, in which a wax cross and piece of pottery with the inscription "Jesus Christ conquers" were placed on the corpse to prevent the body from becoming a vampire. Other methods commonly practised in Europe included severing the tendons at the knees or placing poppy seeds, millet, or sand on the ground at the grave site of a presumed vampire; this was intended to keep the vampire occupied all night by counting the fallen grains, indicating an association of vampires with arithmomania. Similar Chinese narratives state that if a vampire-like being came across a sack of rice, it would have to count every grain; this is a theme encountered in myths from the Indian subcontinent, as well as in South American tales of witches and other sorts of evil or mischievous spirits or beings. In Albanian folklore, the dhampir is the son of the karkanxholl or the lugat. If the karkanxholl sleeps with his wife, and she is impregnated with a child, the offspring is called dhampir and has the unique ability to discern the karkanxholl; from this derives the expression the dhampir knows the lugat. The lugat cannot be seen, he can only be killed by the dhampir, who himself is usually the son of a lugat. In different regions, animals can be revenants as lugats; also, living people during their sleep. Dhampiraj is also an Albanian surname. 

Many elaborate rituals were used to identify a vampire. One method of finding a vampire's grave involved leading a virgin boy through a graveyard or church grounds on a virgin stallion—the horse would supposedly balk at the grave in question. Generally a black horse was required, though in Albania it should be white. Holes appearing in the earth over a grave were taken as a sign of vampirism.

Corpses thought to be vampires were generally described as having a healthier appearance than expected, plump and showing little or no signs of decomposition. In some cases, when suspected graves were opened, villagers even described the corpse as having fresh blood from a victim all over its face. Evidence that a vampire was active in a given locality included death of cattle, sheep, relatives or neighbours. Folkloric vampires could also make their presence felt by engaging in minor poltergeist-like activity, such as hurling stones on roofs or moving household objects, and pressing on people in their sleep.