I trapped vampire bats in the Central American rainforest. All in the name of science and for a few college credits. We sept outside in sleeping bags. As we gathered around the campfire on the first night our professor told us of a previous trip he had been on in which he had awaken during the middle of the night and discovered a vampire bat perched on a student's face and quietly licking blood from a small bite it had inflicted. Our professor quickly scared the bat away and when he woke the student up the student had revealed that he was having a wonderful dream in which angels had been fanning him.