Go Away

One could postulate a truly solitary species. One that reproduces by cloning. Carries a genetic memory. When they reach the stars the find great joy in spreading out and being the only sentient being in a system. And then humans find them. The most benign image that comes to mind is humans following these lone wanderers around like intergalactic kittens begging to be picked up. Imagine some more social species being shocked to get a transmission from these loners. They are less shocked when it is about humans. 

"I do not know! It just followed me back to my travel vessel and now I can't get it to leave!"