I finally remembered to note what species I was photographing here. This was a very dim exhibit, and I could barely see with my own eyes. I figured I'd just try and see what I could get, for the sake of experimenting. It was only after I got home, and looked at the shots that I discovered the bat had a cricket in his mouth! Talk about luck (for me, that is, not the cricket <g>). Canon 100/f2.8, ISO 100, f/4.5, 1/200 second (using built-in flash) (hand-held).