I read this somewhere. Or saw it. Or heard it. Or something. I have a hard time believing it, though.
Right now, we are waiting at the vet, and my dog Sesi (aka, Sesame Street Rumble) is staring at a poster of a dog. This poster is not in his natural line of sight. It is up and off to the side, and it looks like he is staring intently at it.
Of course, I have seen him sit down two feet from a blank white wall and stare at that, too. So it might not mean anything.