Only three of the roughly 1200 existing bat species are vampire bats, and none of them lives in the United States or Canada. Fun fact: a protein in vampire bat saliva, which keeps blood from clotting as the bat feeds, is called draculin. Shari Blissett Clark, president of the Florida Bat Conservancy, told the Daytona Beach News-Journal that bats contract rabies much less frequently than other mammals.