The only reason "we" think that humans are the most evolved of all animals, is that "we" don't really understand evolution.

We are evolved for a specific niche, and so are all other animals. They are just as evolved for their niche as we are for ours. And how evolved you are is not very quantifiable, so what's "more evolved" or "less evolved" is not easy to define.

I guess we're fortunate that our niche has turned out to translate very well to an extremely diverse number of environments. We're good at cooperating and transferring detailed, complex knowledge to new generations, and that has allowed us to develop complex culture, technology, even allowing us to survive in space.