the univerce is so emens and the chances of ther not beeing life out there is slim to nun. but then again the chances of life evolving simolarly to erths is slim to nun in my opinion if wee did come acros life on another planet intelogant or not it would probably be so diforent to us that we brobably wudant recognise it as a life form atall.
The reson most life on erth bairs so much simolaratys is that it all hade to evolv to mach simolar habitats and life stials.
amagin a life form that hade evolv on a planit with practacly no atmosfear and was so fare away from the sun that the planet was in perpetual darknes. the life there would evolv to be small and not move much to conserv what lital energy the sun had given it. ch are it wudant evan have eyes and with an atmosfear so thin its system of breathing would have to be huge posable evan having external lungs or something.
so in my opinion the chances of another humanoid AKA predator and the xeno would be practacly non existant