Howling:Has the doctor ever visited an alien world where there are only the natural occupants and if so, what has been their reaction to seeing people who are not of their species

I cannot think of any time where the doctor has visited a planet where there are only the natives present, no foreign species or alien invaders. And if he has, what happened and did they react in the same way humans do when they see anything strange i.e. mistaking aliens for supernatural forces or just being scared of them?--Coop3 ☎  20:11, September 19, 2013 (UTC)