Dogs actually don't differentiate the fact that we're a different species, we're just goofy looking dogs to them. UPDATE-I STAND CORRECTED
@DownvoterGuy, thats cats, dogs can tell you are a different species, they just don't care, cats think we are large stupid clumsy cats
@Nosferatu Zodd, that's why all the dead mice!
@Nosferatu Zodd, more like dogs can tell we're different and they heckin LOVE it cuz they get to hang out with the amazing man-people who give belly rubs