Intro arrow 13. Animals arrow 13.2 Deer 90
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13.2 Deer have 90 clockwise turning eyes

Deer have pupils in the shape of a horizontal ellipse to have a horizontal alignment with their environment. When they graze, they turn their eyes 90 clockwise, to keep their view horizontally aligned.



  • Heads up, looking around, the deer's pupils are horizontal aligned with the horizon







  • Face down, eating grass, the deer turns his eyes almost 90 to keep his pupils aligned with the horizon
Deer lift their eyebrows to keep their eyelashes horizontally aligned using them as an alignment tool in conjunction with their pupils.


Result: Horizontal alignment defines the way deer control their eyes.

 

 
 
 

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