Is the life span of a vampire bat longer than other species of bat?

No: a vampire bat can live up to 9 years in the wild or 20 years in captivity; the North American common little brown bat can live for up to 33 years, though their average lifespan is much shorter since 50% of them do not survive their first year. http://www.wonderclub.com/Wildlife/mammals/vampirebat.html http://en.wikipedia.org/wiki/Little_brown_bat http://www.hsus.org/wildlife/a_closer_look_at_wildlife/bats/bat_facts.html