How does my dog know to look at my face?

[Lestat]

I'm not gonna slam ya, cuz I think of silly stuff like this all the time.

The answer I believe, is that dogs are capable of communication and they understand (on a very basic level), that your face is the source of communication. Other animals know this as well. Cats for sure do. I once came upon a raccoon and it looked me directly in the eye. So I'd imagine it has as much to do with the eyes as where sound comes from when we speak.

But I admit I don't know for sure, and that the answer might be more interesting than those flaming this question may realize.