Humans
I just came up with this so i had to write it down here.
I think that the moment we started to "create" is the moment we became human.
Thats the moment we weren't primates anymore, where the belief that we aren't Animals anymore would begin.
Now "create" is only a vague word, but trust me on this.
We started making tools at some point, we painted on caves, we created new ways to live, we became creative.