I got this idea a while back after watching another Hunter Hunted episode. Here are the rules: you can post a question about anything partaining to any animal. Once the question is posted, anyone is welcome to join in and post an answer. There will be no limit to how many times one member can guess an answer. If the question is not answered by the next day, whoever posted the question must reveal the answer. Then another member may post a question.
Okay, here's the first question:
The vampire bat is unique among the bat family because it can do what?