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Vampire bats

Although many cultures have stories about them, vampire bats have only recently become an integral part of the traditional vampire lore. Vampire bats were integrated into vampire folklore after they were discovered on the South American mainland in the 16th century. There are no vampire bats in Europe, but bats and owls have long been associated with the supernatural and omens, mainly because of their nocturnal habits.

The three species of vampire bats are all endemic to Latin America, and there is no evidence to suggest that they had any Old World relatives within human memory. It is therefore impossible that the folkloric vampire represents a distorted presentation or memory of the vampire bat. The bats were named after the folkloric vampire rather than vice versa; the Oxford English Dictionary records their folkloric use in English from 1734 and the zoological not until 1774. The danger of rabies infection aside, the vampire bat's bite is usually not harmful to a person, but the bat has been known to actively feed on humans and large prey such as cattle and often leaves the trademark, two-prong bite mark on its victim's skin.

The literary Dracula transforms into a bat several times in the novel, and vampire bats themselves are mentioned twice in it. The 1927 stage production of Dracula followed the novel in having Dracula turn into a bat, as did the film, where Béla Lugosi would transform into a bat. The bat transformation scene was used again by Lon Chaney Jr. in 1943's Son of Dracula.