Dog Smells Like Other Dogs

I have always noticed a, now, i know sometimes dogs will react to a mirror and bark at it, but that's never been my experience in real life. Dogs live in just an entirely different a smell room than human beings. And likewiseayoukow, cats. You know, so much of ther perception is based on their hearing. If it doesn't sound like a cat, could it possibly be a cat? Is it even real? I mean, maybe that's somethinghave you know about good research on the subject sin in it our way. Always want to know about dogs and and their level of self awareness.