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[Exploring the World of Horses: Insights from Iceland]-[Why do horses sleep standing up?]

But Why: A Podcast for Curious Kids · B2 · 2025-10-03

Preschool Enlightenment
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📋 Summary

Understanding the Nature and Biology of Horses

In this episode of But Why, host Jane Lindholm visits Iceland to explore the fascinating world of horses with Sonja Nowak, owner of the riding school Hestasnild (meaning "horse genius"). The discussion covers a wide array of topics, ranging from the history of the unique Icelandic breed to the biological mechanics of how these animals function.

The Unique Icelandic Horse

Icelandic horses are a remarkably pure breed. As Sonja explains, they have been "bred pure Icelandic over a thousand years," primarily descending from the horses brought over by Vikings from Norway. Because Iceland is an island with strict controls, no other horse breeds are allowed in the country, maintaining the genetic integrity of the population. These horses are physically adapted to the harsh, windy, and snowy Icelandic climate, featuring "very, very long fur" and a robust build that allows them to withstand cold weather. Notably, while they are small, Sonja notes that calling them "ponies" is often considered an annoyance to locals.

Anatomy and Physiology

  • Hooves and Movement: The podcast clarifies common misconceptions about horse anatomy. What many perceive as a horse's knee is actually an ankle joint, and horses essentially "walk on their toes." Their hooves are made of keratin—the same material as human fingernails—and require maintenance, sometimes including metal shoes to protect them on hard surfaces.
  • Sleep Patterns: Horses possess a unique ability to "lock their legs" to sleep while standing. This is an evolutionary adaptation that allows them to flee quickly from predators. However, for deep REM sleep, they must lie down, usually with members of the herd acting as lookouts.
  • Respiration and Digestion: Contrary to some beliefs, horses breathe exclusively through their nostrils. Their digestive systems are highly specialized, allowing them to derive energy from grass and hay—a diet that would be ineffective for humans.

Communication and Behavior

Sonja emphasizes that interacting with horses is a form of "nonverbal communication." When using tools like a whip, she clarifies that it is not for punishment but serves as a "longer hand" to help the horse understand subtle cues. The goal of a skilled rider is to be as "sensitive" as possible, using minimal pressure to guide the animal.

Regarding their temperament, horses are highly individualistic. Sonja observes that just like people, "everybody has a different personality." This variety is seen in their reaction to stimuli; for example, horses are naturally wary of snakes or objects near their feet because they have "blind spots" directly in front of them and behind them, making them cautious about potential threats to their mobility.

Specialized Gaits: Tölt and Pace

Beyond the standard walk, trot, canter, and gallop, Icelandic horses are famous for two specific gaits:

  • Tölt: A smooth, four-beat gait where at least one foot is always on the ground, described as feeling like "sitting on a slightly moving sofa."
  • Flying Pace: A high-speed gait often used on straight paths. Sonja describes it as a "vibration" that requires significant energy and is typically ridden for short distances, providing an adrenaline-filled experience for the rider.

Through this deep dive, the episode highlights that horses are not only complex, intelligent animals but also deeply connected to the landscapes and histories of the humans who care for them.

🎯Key Sentences

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They're funny, they're weird, sometimes they're a little bit scary.
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So you, your child, your family can choose the episode that's the right level of scary for you.
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we thought it was high time to do an episode all about them.
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He seems kind of quiet and shy, but your white horse over here seems to want some attention
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Twister probably just wants to say hello and get some cuddles from you.
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📝Key Phrases

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add up
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tune in
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high time
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keep an eye on
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make it through
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📖 Transcript

Hi, I'm Adam Gidwitz, host of Grim, Grimmer, Grimmest.
On every episode, we tell a grim fairy tale.
Not the cute, sweet versions of the fairy tales that your children have heard so many times.
No, we tell the real grim fairy tales.
They're funny, they're weird, sometimes they're a little bit scary.
But don't worry, we rate every episode grim, grimmer or grimmest.

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