Vampire Bat (IMAGE) University of California - San Francisco Caption The vampire bat, Desmodus rotundus, must find a blood meal every 1-2 days to survive. Razor sharp teeth and infrared-sensing "pit organs" surrounding its nose help the bat achieve this goal. Credit Dr. Pascual Soriano Usage Restrictions Authorized for use by press only. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.