[mcny]

Dogs are better than humans because they can obviously see past the fact that humans look nothing like dogs and still accept humans in their "pack". Even cats seem to have the control when playing with humans to not scratch too deep by which I assume they accept humans in their group as well.

[azernik]

Humans aren't worse about this; pet owners also anthropomorphize the hell out of their pets.

[hydrogen18]

It's not that dogs can "see past" the fact that humans aren't dogs. They can't tell that humans aren't dogs at all. In fact, if an animal is non-aggressive domesticated dogs are often just friendly with it.