Calling the deer and feeding them, at Nara park in Japan.
I really recommend listening with headphones for the full binaural effect (sounds almost like you're right there, next to the deer), as the audio has been recorded with in-ear microphones. The video also comes in 3D, for those who know how to use that (I don't).
Btw, the user who posted this video on youtube has quite a few other videos recorded with in-ear microphones. Highly recommended when you want to feel like you're somewhere else. :)