A vampire bat is a type of bat possibly involved with Dark Magic.
During the infamous final of the first Quidditch World Cup in 1473, Transylvania released one-hundred vampire bats on to the Flanders team.
Vampire bats were studied by fifth years
in Defence Against the Dark Arts
in the 1991-1992 school year
, which was taught by Professor Quirinus Quirrell
at the time.
As Dolores Umbridge
said in 1995
that Quirrell's classes were the only ones which would pass a Ministry inspection, vampire bats were likely part of the curriculum approved by the Ministry of Magic
Notes and references