[The Slim Reaper]

Originally Posted by parmnion

Researchers in Hungary found that dogs simply aren't wired to respond to faces. When shown pictures or videos of faces, their brains simply don't light up the way a human brain does. In fact, to a dog's brain, it makes no difference whether they're looking us dead in the eyes or at the back of our heads.2

Probably something to do with eye contact being about dominance/submission. From an evolutionary standpoint, if an animal is avoiding eye contact then they'll more than likely miss the whole face.