Doppelganger

Prologue

Have you ever thought about how certain animals look at you in different ways? Like cats and dogs for example. A cat would just simply stare at you before approaching or running away. Dogs, however, like to avert their eyes and stare at something else. People say that animals have sharper senses compared to human beings. They could smell better, hear better, and of course... see better.

So, what made cats be able to hold their gaze without wavering? Or dogs who just couldn't look at you without being distracted. Is it the sight of you which made them behaves that way? Or is it something else?