Ashwin Lewis
Horses have very different sleeping habits from humans. Unlike humans, who typically sleep for one extended period of 6-9 hours per day, horses rest in shorter, scattered blocks of time (15-30 minutes) throughout the day and night. They are neither diurnal nor nocturnal, but instead have alternating periods of active foraging and rest that go around the clock. Horses are prey animals, and even when domesticated, their sleep behaviour is influenced by the need to stay alert for predators. They can sleep standing up, but they also need to lie down for deep sleep a few times each night. They tend to sleep for about 5-7 hours each 24-hour period, and their sleep patterns are affected by factors such as diet, temperature, workload, gestation, and gender. While it may be tempting to wake a sleeping horse, it is important to let them rest, as sleep is critical for their health and well-being.
| Characteristics | Values |
|---|---|
| How long do horses sleep for? | Horses sleep for 5-7 hours per day in various periods of 15-30 minutes. |
| How often do horses sleep? | Horses sleep a few times each night, and they can sleep standing up or lying down. |
| Why do horses sleep less than humans? | Horses are prey animals, so they are always on the lookout for predators. |
| What do horses need to sleep? | Horses need to feel safe and have a comfortable place to sleep. |
| How do horses sleep? | Horses sleep in three positions: standing, lying on their side, or lying on their bellies with legs tucked. |
| What do horses prefer to sleep on? | Horses prefer to sleep on hard ground over soft bedding. |
| Why do horses lie down? | Horses lie down to sun themselves, and it is common for several horses to lie down at the same time. |
| When do horses sleep? | Horses are neither diurnal nor nocturnal, so they have alternating periods of foraging and rest throughout the day and night. |
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What You'll Learn
Horses sleep in short bursts
Horses are polyphasic sleepers, meaning they have multiple sleep periods throughout the day, with most of their sleep occurring at night. They rest in short, scattered blocks of time, ranging from 15 to 30 minutes each, and their total sleep time is usually made up of sleep cycles interrupted by periods of wakefulness.
They can sleep both while standing and while lying down. Most horses will lie down for deep sleep a few times each night if they feel safe and have a comfortable place to do so. They require a sheltered area, like a roomy stall, to stretch out and snooze.
When horses are dozing, they carry their weight on their two forelegs and one hind leg, with the hoof of the other hind leg resting on its toe. Their head and neck droop, and their eyes are closed while their lower lip may droop or twitch.
Standing sleep is light sleep and is more common among mature horses. It is made possible by a special anatomical feature called the stay apparatus, which is a group of tendons and ligaments that work together to keep the horse standing with minimal muscular effort. This allows horses to quickly awaken and flee if they sense danger.
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They can sleep standing up
Horses have very different sleeping habits from humans. While humans sleep for a single extended period of around 6-9 hours per day, horses rest in shorter, scattered blocks of time (15-30 minutes) throughout the day and night. This is because horses are prey animals, so they are always on the lookout for predators.
Horses rest in one of three positions: standing, lying on their side, or lying on their bellies with their legs tucked. They can sleep standing up thanks to a special "passive stay apparatus" that helps their bodies conserve energy and doze safely while standing. This type of sleep is light sleep and is different from deep REM sleep.
Older horses, in particular, prefer to sleep standing up and will rarely lie down unless no one is watching. This is because their own weight causes pressure on their internal organs, and they may struggle to get up again.
Horses tend to spend less time lying down in cold, snowy conditions, although they may stretch out in the sun to sunbathe. They also tend to rest and forage at different times depending on the weather and other environmental conditions, such as bugs, available food, and water.
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Horses sleep more lying down as foals
Horses are prey animals, which means they are always on the lookout for predators. Sleeping standing up allows them to be ready to run away from predators. This is an evolutionary trait that helps them survive. Horses have a specialized anatomical feature called a "stay apparatus" that includes a series of tendons and ligaments that act as tension bands to stabilize the joints in their legs, allowing them to lock their legs in place and sleep while standing.
However, horses need to lie down for more restorative sleep and to achieve REM (rapid eye movement) sleep. REM sleep is essential for the brain to consolidate and process new information for long-term memory. While standing, horses can only achieve slow-wave or deep, dreamless sleep. Therefore, horses must lie down every day. If they don't, they may experience sleep deprivation, which can lead to health risks such as falling or being misdiagnosed with narcolepsy.
Foals, or young horses, tend to spend more time sleeping lying down, and this gradually decreases as they age. Senior horses may doze more frequently, but they still require a comfortable and safe place to lie down and stretch out. It is important to provide a dry, sheltered area, such as a run-in shed or a roomy stall, to ensure they can get adequate rest.
Overall, while horses can sleep standing up, they also need to lie down for deeper sleep and to maintain optimal health. Foals typically lie down more often, and it is important to provide them with a suitable environment to do so safely.
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They prefer to sleep on hard ground
Horses have very different sleeping habits from humans. Unlike humans, horses rest in short, scattered blocks of time throughout the day and night. This is because horses are prey animals, and are always on the lookout for predators.
Horses rest in one of three positions: standing, lying on their sides, or lying on their bellies with their legs tucked in. They tend to spend less time lying down in cold, snowy conditions, but on sunny days, they might stretch out in the snow for a snooze. Horses also tend to sleep more when they are young, and senior horses may doze more frequently.
Interestingly, horses prefer to sleep on hard ground. This may be because their weight causes pressure on their internal organs when they lie down, and hard ground helps to mitigate this. It is important to let sleeping horses lie, as they can suffer from irreversible internal damage if they are kept in a downed position for too long.
If you suspect that your horse is not getting enough sleep, you can try leaving their stable doors open at night so they don't feel confined, or providing a dry, sheltered area like a roomy stall where they can stretch out and feel safe.
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Horses sleep more at night
Horses typically sleep in short bursts throughout the day and night, but they tend to sleep more at night. This is because they feel safer lying down at night when predators are less likely to be around.
Horses are prey animals, so they are always on the lookout for potential threats. They tend to sleep standing up during the day to ensure they can make a quick escape if needed. However, they require rapid eye movement (REM) sleep to maintain optimal health, and they can only achieve this when lying down. Therefore, they usually lie down to sleep at night when they feel safer.
A horse's sleeping environment is crucial. Horses need to feel safe and comfortable to get adequate rest. They typically choose open spaces that allow for a quick escape and good visibility. Access to a dry, sheltered area, such as a roomy stall or shed, can encourage horses to lie down and get the deep sleep they need.
The size of the bedded area also matters. In groups of horses, competition for space can be fierce, and low-ranking horses may not get enough lying time. Ensuring adequate room for all horses to lie down comfortably can improve their quality of life and minimise welfare issues.
Additionally, factors such as age, health, diet, temperature, workload, and gender can influence a horse's sleep patterns. Young horses and foals require more REM sleep for proper development, while older horses may nap more frequently but for shorter periods.
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Frequently asked questions
Horses are prey animals, so they are always worried about predators attacking them. Their sleep behaviour evolved from ancestors roaming the open plains. They rest in shorter, scattered blocks of time (15-30 minutes) throughout the day and night.
Horses can sleep standing up, but they also sleep lying on their side (lateral recumbency) or on their bellies with legs tucked (sternal recumbency). When experiencing deep sleep lying down, they will stretch flat out on the ground. Their heads and necks droop, their ears are relaxed, their eyes are closed, and their lower lip may droop or twitch.
Horses have a special passive stay apparatus that helps their bodies conserve energy and doze safely while standing. This type of sleep is light sleep versus deep REM sleep.
Horses need a lot of sleep, so it's best to let them sleep. However, if you must wake a sleeping horse, quietly nudging them will probably be met with a drowsy but nice attitude.
