Uh, we hope the anesthesiologist was on their game……. An animal dentist had to perform a ROOT CANAL on a 308-pound 6-year old female tiger at the National Zoo in Woodley Park this weekend. The photos in this Washington Post article are insane! The dentist who did the root canal on Nikita (an Amur tiger) has a patient list that includes over 50 other tigers, and Secret Service K-9’s. Quite the resume.