Eh, it depends how you look at it. Us humans are "advanced" in some ways but look at it from the other side. We pollute this earth with all kinds of man made chemicals, we ruin the landscape by building all sorts of contraptions to house the offspring we produce. We are psychologically very complex, and unless we find something to keep ourselves happy we can become unhealthy in the mind. We don't hibernate, we can't hold our breath underwater for very long, and unlike many animals, we aren't "specialised" in any particular part of survival. We survive because we have machines, guns and bombs to do it for us.
I received some news the other day that put me on a downer, and gave me a refresher as to how bitchy humans can really be to each other. I have to go to work every day just to keep a roof over my head, something which I don't particularly enjoy but is a necessity. I have a boss to answer to, and several people in life that if we don't constantly let them know we are present, can worry and/or grow distant. Life is a constant uphill struggle, emotionally and physically, for just about everyone, in one way or another.
Yet I sat the other day watching the cat playing with a piece of string with beads on it, and he was obviously content. Sure, he isn't as intelligent as me, and he hasn't "revolutionised" the world like humans have, but I'm damn sure he's happier than most of "us" will ever be, and he has a simpler life to boot. Sure, humans may be more "advanced" than the rest of the animal kingdom but I think a lot of it is the wrong kind of advancement. We are our own worst enemy and our own stupidity and selfishness will one day be the death of us. Then there's the intense hate that so many of us have towards other people - where else in the animal kingdom do you see the kind of hate that us humans have against each other? We're practically at civil war with ourselves, and I struggle to call that an advancement...