• uphillbothways@kbin.social
    link
    fedilink
    arrow-up
    33
    ·
    edit-2
    10 months ago

    Seems like if you read between the lines, there’s a certain commonality in increased respiration/alertness, stress response and showing of teeth that solves a common need across species. When a subject recognizes a lack of alertness, a present threat or the need for aggressive action in the near future, a yawn can help prepare for that while also giving pause to those who might be threats and/or potentially paralyzing prey. The failure in consensus here appears, to me, an inability to describe those seemingly disparate needs as related to the physiology that drives them. Not a lack of understanding, so much as a deficiency in perlocution.

  • El Barto@lzrprt.sbs
    link
    fedilink
    English
    arrow-up
    18
    ·
    10 months ago

    It’s from when caveman wanted to leave their friends cave and go home, but can’t get an ugg in and they don’t want to be rude.

  • Flying Squid@lemmy.world
    link
    fedilink
    English
    arrow-up
    14
    ·
    10 months ago

    I used to have a dog that would yawn with a little whine whenever she was frustrated. It was adorable.

        • bionicjoey@lemmy.ca
          link
          fedilink
          English
          arrow-up
          3
          ·
          10 months ago

          Yeah mine does it too, but the scream is so quiet compared to how wide his mouth is… It looks like he should be screaming a lot louder but it’s just this little squeak

    • digitalgadget@kbin.social
      link
      fedilink
      arrow-up
      2
      ·
      10 months ago

      That’s pretty common among cats and dogs. Sometimes the clever ones will hide a bite they decided against at the last second with a yawn, too.

  • Jebus
    link
    fedilink
    English
    arrow-up
    12
    ·
    edit-2
    10 months ago

    I watched a video a couple years ago where they did an experiment with chimps. I thought they concluded that the “cantagious” yawning has to deal with the animals empathy and wanting to be like others, it was a social thing in pretty sure. I have no idea where to even find this video though so take that with a grain of salt

    • frozen@lemmy.frozeninferno.xyz
      link
      fedilink
      English
      arrow-up
      10
      ·
      10 months ago

      Mythbusters rated contagious yawns as plausible, I believe, because they observed multiple instances of yawns spreading throughout a building where the participants couldn’t see each other.

      • Jebus
        link
        fedilink
        English
        arrow-up
        2
        ·
        10 months ago

        Its all pretty interesting to think about honestly! Hopefully we get an actual answer instead of just speculation!

  • Ktheone@lemmy.world
    link
    fedilink
    English
    arrow-up
    11
    ·
    10 months ago

    Lmao, the guy in the thumbnail painting was a big meme years ago on the internet. Remember that time lol

  • Num10ck@lemmy.world
    link
    fedilink
    English
    arrow-up
    10
    ·
    10 months ago

    i thought it was to clear out carbon dioxide build up deep in your lungs, and instinctually its an indicator of rest?

    • NovaPrime@lemmy.ml
      link
      fedilink
      English
      arrow-up
      5
      ·
      10 months ago

      As someone with asthma and lowered ability to cycle out CO2, yawning has always helped me restore the “full” feeling and your comment just made everything snap into place.

      The primary driver of suffocation panic, pain, and feeling of air starvation isn’t the lack of oxygen but CO2 buildup. It makes sense that yawning on command could then help alleviate the symptoms of CO2 buildup in asthma sufferers.

      • nomad@infosec.pub
        link
        fedilink
        English
        arrow-up
        3
        ·
        10 months ago

        Might be a group protection mechanism to indicate low oxigen in crammed spaces qith many individuals. In addition to that could be a geoup trigger for rest.

    • Digestive_Biscuit@feddit.uk
      link
      fedilink
      English
      arrow-up
      5
      ·
      10 months ago

      I always thought it was due to clearing the lungs out or to regulate them but then I saw a turtle yawn under water. I then thought it’s ancestors wouldn’t have been swimmers so maybe it’s instinctive still, but then it would need a mechanism to prevent water inhalation. So why retain the yawn.

      Perhaps as you say it’s more about visual communication to others around you.

    • Swedneck@discuss.tchncs.de
      link
      fedilink
      English
      arrow-up
      2
      ·
      10 months ago

      It seems most sensible to me that it serves a bunch of uses: clearing the lungs, alerting yourself and others that you’re tired and probably need someone else to take over, social bonding, spooking predators…