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.
The
purpose of this site is to present questions and new ideas about
the above subjects.
The
purpose of this site is to present questions and new ideas about
the above subjects.
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