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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