Interesting article, thanks for posting.
Ádám Miklósi of Eötvös Loránd University in Budapest, Hungary, and his team tested dogs and wolves, and found that dogs were far more attentive to human faces than were wolves, even socialized wolves. Although wolves excel at some gaze-following tasks, perhaps suggesting a preadaptation for communicating with humans, dogs tend to look at human faces for cues and wolves do not. Miklósi’s team believes this major behavioral difference is the result of selective breeding during domestication.
One thing that they didn't mention here is that another difference between dogs and wild or socialized wolves is that dogs instinctively know to look at the left side of a person face - just as humans do - to read emotion.
They can definitely read us well.
My dog (German Shepard) sort of has white sclerae. You can definitely tell which direction she's looking most of the time when she isn't looking straight at you. I finbd it kind of funny that the other day my sister looked at my dog for a little while and said: there's just something odd about her gaze, but I can't put my finger on it. When I mentioned the sclerae, she said that it was that
They could've mentioned herding dogs too, in sheepdog behaviour there are very interesting parallels between wolf cooperative hunting and herding. A good case of the instincts being molded and honded in for the purpose of human/dog symbioism.