Remember the kids' song, "head, shoulders, knees and toes"? Well I'm thinking in addition to eye shape that teeth shape could be quite revealing, too.
Pay attention to the person on the other side of the conference table. Their eyes and teeth may not reveal if they are a predictor, but other cues will probably be clear if you just sit quietly and watch.
There's something to be said for attention to detail.
http://www.theguardian.com/science/2015/aug/07/eye-shape-reveals-whether-an-animal-is-predator-or-prey-new-study-shows
