Why do cats have vertical pupils? - Emma Bryce

  • Published on Jan 12, 2022
  • Dive into the incredible diversity of animal pupils, and how the different shapes indicate the animal’s role in an ecosystem.
    Peering into the eyes of different animals, you’ll see some extraordinarily shaped pupils. House cats, for one, are twilight hunters with vertically elongated pupils. Many grazing animals, like goats, have rectangular pupils. Other animals have crescent- or heart-shaped pupils. So, what’s going on? Why are there so many different pupil shapes? Emma Bryce digs into the science of animal vision.
    Lesson by Emma Bryce, directed by Bálint Gelley, CUB Animation Ltd.
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Comments • 1 714

  • ᴡᴀᴊɪʜ🗿

    Its so cool that Ted Ed answers all these questions that randomly pops in our mind in such a unique, well researched and beautiful way.

  • Abhinandan Prasad Barnwal

    I really want a part 2 to know more about the heart shaped pupils.

  • D D
    D D  +4

    A very eye-opening video indeed.

  • soft army
    soft army  +469

    She narrated it so beautifully and along with the adorable pictures by the artists. It didn't feel like a lesson, it felt like a therapy.

  • Shiny Agumon

    I love how everything relating to human biology basically comes down to us being the ultimate everyman.

  • Danny Ramos

    Give the animator a raise! It was wonderful to see each animals POV

  • anaiya ?!

    i love that the tittle makes one think it's a lesson only about cat eyes but it's actually all about pupils. they know we're all cat maniacs

  • Pragya Raj
    Pragya Raj  +510

    I'm surprised NO ONE is talking about the narrator's voice! Her way of speaking it and tone was soo soothing. That's one of the best voices I've heard in a while.

  • Uka'To'ah the Cat Human Hybrid

    Thank you, Ted-Ed, for enlightening us about the creatures that share our world. Amazing animation as well. Keep up the great work! :)

  • Greg Gallacci

    Slit-pupils have another effect: movement across the visual field is 'amplified' whereas movement up and down is 'diminished'.

  • Flying Geovishap that can swim

    Video length ✔

  • Prakh
    Prakh  +127

    The one with geckos was so cool to know about. Different points of focus allow the gecko to calculate distance it needs to capture pray like a mathematical formula.

  • Lambadajew O.

    It's somehow amazing to think that so much knowledge is in all that surrounds us

  • All Might
    All Might  +281

    Would have loved a mention about the Mantis Shrimp, it has some of the best vision in all of the animal kingdom, curious to know what their pupils are like.

  • NICK Z
    NICK Z  +384

    It is an ancient Japanese art to tell the time by a cat's pupils. Prior to the days of electric light, mainly.

  • Nathan Hansen

    This was fantastic. This was well designed and a joy to watch, great work everyone involved!

  • Judith Wright

    Wow, great lesson. So clear and interesting. Great animation.

  • Roberto
    Roberto  +35

    Outstanding video production: expertly narrated, loaded with facts and entertaining. Really well done!

  • Thauã Aguirre

    Better question, why do they look SO CUTE when their pupils dilate?

  • Haseeb Rasool

    Definitely my favourite channel, so informative in just five minutes and always interesting with great animation. Thank you!!