Eye shapes of animals can tell us about their lifestyles by Meredith Jacques

Eye shapes of animals can tell us about their lifestyles by Meredith Jacques
Can you guess which eyes belong to what animal? Top row, from left: cuttlefish, lion, goat. Bottom row, from left: domestic cat, horse, gecko.

Scientists have recently discovered that the shape of an animals' pupil is very closely related to their behaviors and niche in the world.  Predators tend to have pupils that are vertical slits (like your pet cat).  But, this only applies if they are short, and therefore their eyes are closer to the ground.  For taller animals that hunt for food, pupils tend to be more round.  For animals that are usually prey, horizontal pupils tend to be more common.  But, it turns out this is only useful when an animal's pupils are parallel to the ground.  The scientists were curious what happens when an animal moves it head down to eat (like a deer eating grass).  They decided to look at animal's eyes while they were moving their head.  They discovered that their eyes actually rotate in their heads!  The eyes rotate to keep the pupil parallel to the ground.

Why might this be useful information to know?
What does this tell us about human beings?
Who might be interested in this information other than scientists?



http://www.npr.org/sections/health-shots/2015/08/07/430149677/eye-shapes-of-the-animal-world-hint-at-differences-in-our-lifestyles

Comments

  1. this is great information for zoologists and expermental scientist.
    - Anushka Raole

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    1. Gotta agree to that, could be very helpful for a lot of reasons such as it could help identify certain species of a certain animal.
      -Nathaniel Hamilton

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  2. Humans do not hunt, so that could be a reason our pupils are round. -Tori Favazza

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  3. this is good for artist looking at how to draw different animal eyes -brooke phelan

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  4. Why are dogs eyes round if they're predators and low to the ground? - Shannon Easley

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  5. i think its interesting that an animals eye will move in the head to stay parallel with the ground -jo piechur

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  6. I found it interesting how taller species have rounder eyes for example giraffes and humans

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  7. this is good for wildlife photographers that dont want to get too close to a predator. -molly mcauley

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  8. Artist can use this information when making painting, drawings, and/or sculpture of animals when they don't necessarily have a picture of it.
    Kamilah Gamble

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  9. This is useful information so we can determine different species and distinguish which ones are predators, which ones are prey.
    -Mitchell Shabansky

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  10. Other people interested in this information could include farmers, doctors, hunters, etc. -Haleigh Madi

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  11. Knowing the eye shapes of animals can help identify the height and what the animal eats. - Riki Tanaka

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  12. I think it would be interesting if we could find out if our eyes used to be more vertically shaped since we were more like predators as ancestors.
    - Sarah Joseph

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  13. Because we walk upright, we are taller, making our pupils more round

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  14. This information would be useful to people who are obviously studying studying the shapes of animals eyes but it also would be useful to people who want to go into detail of drawing or sculpting an animal. -Darren Madison

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  15. This information lead me to look at the pupils of animal's eyes. I had lots of fun doing so. Humans have round pupils. Humans are taller than most land animals, which is the factor of higher perspective- rounder pupils. But humans were also at one point hunters, even if they mostly aren't now. This information shows us that humans have the eyes of a predator who is used to being higher up rather than lower. - Grace Briggs

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  16. I think that it is interesting how to process of evolution has led to unique characteristics that lead to biological advantages for a certain species. Moreover, this process has evidently caused a way to identify their background/lifestyle.

    Matt Schnaare

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  17. Its good for zoologists who need to know what an animal is like- connor ortmann

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  18. I find it interesting that by see the shape of the animals eye you can tell a lot about how they live their life and their history-grecia

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  19. This tells us that humans are considered a taller animal because we have round pupils-Kayklyn

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  20. Who might be interested in this information other than scientists?
    "The shape of an animals' pupil is very closely related to their behaviors and niche in the world."

    - Shaima Alzubair

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  21. Are there any exceptions to this pattern like how in another comment someone said dogs have round eyes but are low to the ground? - Brandon Smith

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