Saw this on Boing Boing, which also hit the Werner "Whitey" Herzog jackpot in a comment to that post. It appears that Herzog had a moment of synchronicity with this GIF in his 2007 film, Encounters at the End of the World. Here's the full quote:
The National Science Foundation had invited me to Antarctica, even though I left no doubt that I would not come up with another film about penguins. My questions about nature, I let them know, were different.
I told them I kept wondering why is it that human beings put on masks or feathers to conceal their identity? And why do they saddle horses and feel the urge to chase the bad guy? Hi-yo, Silver!
And why is it that certain species of ants keep flocks of plant lice as slaves to milk them for droplets of sugar?
I asked them why is it that a sophisticated animal like a chimp does not utilize inferior creatures? He could straddle a goat and ride off into the sunset.