How many species of the 1 000 kinds of bats are vampire bats that drink blood?

25 kool-ade packets, 42 tbs. of brown sugar, 798,754,237,475 grams of peanut butter oil, .0000038 micro liters of eyeball juice, and to top it off, 8937194629561947628934731682168765 nanometers of miniature dachshund tail hairs. thanks.