Korean hare facts for kids
Quick facts for kids Korean hare |
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| Conservation status | |
Scientific classification  |
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Lagomorpha |
| Family: | Leporidae |
| Genus: | Lepus |
| Species: |
L. coreanus
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| Binomial name | |
| Lepus coreanus Thomas, 1892
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| Korean hare range | |
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The Korean hare (Lepus coreanus) is a type of hare that lives in the Korean Peninsula and parts of northeastern China. These hares can be found in many different places, from high up in mountain forests to farms. Their fur is usually a shade of brown.
Contents
- About the Korean Hare
- How Scientists Classify the Korean Hare
- Where Korean Hares Live and Their Homes
- Adaptations
- Protecting the Korean Hare
- See also
About the Korean Hare
An adult Korean hare usually weighs between 2.1 and 2.6 kilograms (about 4.6 to 5.7 pounds). Its body can be 45 to 54 centimeters (about 18 to 21 inches) long. The tail is short, typically 2 to 5 centimeters (about 0.8 to 2 inches) long. Its ears are quite long, measuring 7.6 to 8.3 centimeters (about 3 to 3.3 inches).
How Scientists Classify the Korean Hare
Scientists use a system called taxonomy to group living things. The Korean hare was first described by a scientist named Oldfield Thomas in 1892.
There are five other types of hares in the same group (genus Lepus) that live in eastern Asia. These include the Chinese hare, the mountain hare, the Manchurian hare, the Japanese hare, and the brown hare.
For a while, some scientists thought the Korean hare was a subspecies of the Japanese hare or the Chinese hare. However, a study in 2010 looked at their mtDNA (a type of genetic material). This study showed that the Korean hare is its own unique species, L. coreanus.
Where Korean Hares Live and Their Homes
The Korean hare is found in the Korean Peninsula and in the Jilin Province in northeastern China. They live in many different kinds of places. You can find them on flat plains, in areas with lots of bushes (scrublands), and in mountains.
In some areas, like coastal farms, you might not find any Korean hares. But in hilly areas, there might be about four hares per square kilometer. In the mountains, you could find about five hares per square kilometer. A study in Jirisan National Park in South Korea found that more hares lived where there was more dense scrub to hide in.
Adaptations
To survive in steep, rocky mountain forests with freezing, snowy winters and hot, humid summers, it relies on a remarkable set of adaptations.
Structural and Fur Adaptations
The Korean Peninsula is dominated by the rugged Baekdudaegan mountain range. Summers can be hot, rainy, and lush, while winters bring sub-zero temperatures, howling Siberian winds, and heavy snowstorms. The Korean hare uses physical adaptations to conquer these shifting seasons.
Molting
- Summer Coat: During the warm months from May to September, its fur is a rich mix of tawny-brown, yellowish-gray, and dark charcoal. This color pattern breaks up the hare's outline against dark forest soil, granite rocks, and dense green bushes.
- Winter Coat: As autumn temperatures drop and daylight shortens, the hare sheds its summer coat and grows a much thicker, lighter-colored winter coat. The fur turns a silvery-gray or pale ashy-white. In rocky mountain regions where snow covers the ground in patches, this pale silver-gray coat blends seamlessly into frost-covered boulders and snowy hillsides.
Dual-Layer Thermal Fur
The winter coat is not just a different color—it is an advanced insulation system:
- A dense, woolly layer of short, wavy hairs traps pockets of still body heat right next to the skin, acting like thermal underwear.
- Longer, thicker, water-repellent hairs grow over the underfur. These act like a windbreaker and raincoat, shedding melting snow, sleet, and freezing rain.
Built-in Snowshoe Paws
Running across soft snow or slick, muddy forest ground can cause an animal to sink and lose speed. The Korean hare has wide, elongated hind feet covered in stiff, bristly hairs. The broad surface area acts like a pair of snowshoes, spreading the hare's body weight over a larger area so it can skip across deep snowdrifts without sinking.
The coarse hairs on the bottom of the paws provide friction, giving the hare a firm grip when leaping across wet granite slabs and icy slopes.
High-Speed Locomotion and Escape Engineering
The Korean hare shares its mountain home with skilled predators, including the Eurasian lynx, red foxes, yellow-throated martens, eagle owls, and leopards. Because it has no underground burrow to dive into, speed and agility are its primary defenses.
The hind legs of the Korean hare are substantially longer and more muscular than its front legs. Long leg bones act as physical levers. When the hare pushes off the ground, these long levers generate tremendous upward and forward thrust.
Because its back legs are so long, the Korean hare runs faster uphill than downhill. When pursued, it instinctively dashes up steep mountain ridges, quickly leaving heavier predators exhausted.
When chased, the Korean hare rarely runs in a straight line. Instead, it performs sudden, high-speed zig-zag sharp turns at angles of 45 to 90 degrees. Because it has a very low center of gravity and gripping paws, it can change direction instantly. A pursuing predator, carrying more weight and momentum, slides forward or loses precious seconds trying to turn, allowing the hare to break away.
A hare’s backbone is exceptionally flexible. When running, the hare curls its back tightly, pulling its hind legs all the way forward past its front paws. As the hind feet hit the ground, the spine straightens like a released bowstring, catapulting the hare forward into the next giant stride.
Sensory Superpowers: 360-Degree Awareness
- Panoramic 360-Degree Vision: The hare’s large, dark eyes sit high on the sides of its head, bulging slightly outward. This eye placement gives the Korean hare an almost complete 360-degree field of vision. Without even turning its head, it can see approaching threats from the front, sides, above, and directly behind it. The retinas of its eyes are packed with light-sensitive rod cells, making it extraordinarily sensitive to the slightest movement, even in dim twilight or under moonlight.
- Independent Radar Ears (Pinnae): The ears of the Korean hare measure between 7.5 and 11.5 cm long. Each ear can rotate independently like a miniature radar dish. The hare can point one ear forward to listen to where it is running, while pointing the other ear backward to track the sound of footsteps behind it.
- Tactile Whisker Grid (Vibrissae): The long, stiff whiskers on its snout and cheeks are deeply rooted in sensitive nerve endings. Because the Korean hare is most active at dawn, dusk, and night, these whiskers act as physical feelers, measuring the width of brush openings and preventing the hare from bumping into branches and rocks in pitch darkness.
Dietary and Digestive Adaptations
During lush spring and summer months, food is everywhere: succulent clover, green grass blades, wild dandelion roots, and soft mountain herbs. But when winter arrives in the Korean mountains, all the green plants vanish under snow and ice.
To survive months of freezing weather without starving, the Korean hare uses special dental and digestive adaptations to eat what other animals find completely indigestible: dry tree bark, woody twigs, and fibrous root systems.
Self-Sharpening, Ever-Growing Teeth
Wood and bark are filled with abrasive plant fibers and tough silica crystals that wear down teeth like sandpaper.
- The front chisel teeth (incisors) of the Korean hare have open roots and grow continuously throughout its entire life (several millimeters per month). The front surface of the tooth is coated in hard enamel, while the back surface consists of softer dentin. As the hare chews on tough wood, the softer back layer wears away faster than the front layer, maintaining a razor-sharp, chisel-like edge that slices through tree bark with ease.
- Directly behind its top front incisors sits a second, smaller pair of helper teeth called peg teeth, a unique feature found only in lagomorphs (hares, rabbits, and pikas).
The Double-Digestion System
Mammals cannot digest cellulose (the tough structural material in plant cell walls) on their own because they lack the necessary enzymes. The Korean hare solves this problem using a biological fermentation tank called the cecum (a large pouch located between the small and large intestines, packed with billions of beneficial bacteria).
The hare chews twigs and bark, which pass into the stomach and intestines. The heavy fibers enter the cecum, where special bacteria ferment and break down the cellulose, producing valuable proteins, fatty acids, and B-vitamins. The hare excretes these fermented nutrients in special soft, mucus-coated droppings called cecotropes. The animal immediately re-eats these soft cecotropes (a natural biological process called cecotrophy). The nutrient-rich cecotrope material passes through the stomach and small intestine a second time, allowing the hare to absorb all the essential vitamins and proteins that were unlocked by the cecal bacteria.
After all nutrients are fully extracted, the hare excretes small, dry, round pellets that contain only unusable sawdust-like fiber. This adaptation allows the Korean hare to thrive through harsh winter months on a diet of dry wood and bark that would cause other herbivores to starve!
Behavioral Adaptations
Because hares do not dig deep burrows, they rest in shallow scraped-out depressions in the soil, fallen leaves, or thick grass called forms. The form is usually tucked under a dense thornbush, fallen log, or overhanging rock ledge, shielding the hare from wind, snow, and hunting birds of prey.
When a predator approaches, the hare does not immediately run. Instead, it presses its body completely flat into its form, tucks its legs underneath, and pins its ears back flat against its neck. By remaining 100% motionless, it lets its camouflage fur do the work. It only bolts at maximum speed if the predator comes within a few steps.
The Korean hare avoids activity during bright daylight hours when large eagles, buzzards, and human hunters are most active. Instead, it leaves its form during crepuscular hours (dawn and dusk) and throughout the night to forage under the cover of darkness.
Precocial Offspring: Ready to Run on Day One
When a female Korean hare gives birth to her babies (called leverets), they do not arrive helpless: leverets are born with a full coat of warm fur and open, alert eyes. Within just a few hours of birth, baby hares can stand, hop, and hide in separate clumps of brush. The mother purposely scatters her 1 to 4 babies in different hiding spots nearby. If a predator finds one baby, the others remain safe. The mother visits them only once or twice a day to nurse them with rich, nutrient-dense milk, minimizing the scent trail that could attract carnivores.
Protecting the Korean Hare
The IUCN (International Union for Conservation of Nature) keeps a Red List of Threatened Species. They have listed the Korean hare as a species of "Least Concern". This means that, for now, scientists believe the Korean hare is common and not in immediate danger of disappearing. We don't know if their numbers are growing or shrinking, but there are no big threats identified for them right now.
Sometimes, Korean hares can cause problems for farmers. They have been reported to damage barley crops in parts of South Korea. They can also chew the bark off peach trees, which can kill the trees.
Even though it's listed as "Least Concern" globally, the Ministry of Environment in South Korea named the Korean hare as a possible "Endangered species candidate" in 2018. This means they are watching the species closely in South Korea.
See also
