Why Does My Horse Keep Yawning?
By Dr. Zubair Khalid, DVM, MS, PhD ·
Why does my horse keep yawning? In most cases, yawning in horses is a normal sign of relaxation or a way to release stress, and it often shows up around feeding, grooming, or rest. It can also appear when a horse is uncomfortable or in pain, so the yawn itself matters less than what comes with it. This article is educational and is not a substitute for veterinary diagnosis or treatment.
Quick Answer
- A few yawns a day, especially after work, during grooming, or before rest, are usually normal.
- Yawning happens more often when horses are stabled for long periods, which suggests it can reflect stress or a low mood state [1].
- Horses can catch yawns from herd mates they are close to, so yawning can be social [2].
- A tight noseband can physically block a horse from yawning, so a horse that never yawns may be restricted [3].
- Yawning paired with colic signs, weight loss, head shaking, or behavior changes needs a veterinarian.
What Horse Yawning Looks Like and What Is Normal
A yawn in a horse is a slow, wide opening of the mouth with a stretch of the jaw, often with the neck extended and the head lowered slightly. Researchers watching horses on pasture described two forms: one with the mouth mostly covered and one with the teeth showing. The two forms use different facial muscles, so not every yawn looks the same [2].
Normal yawning tends to cluster around certain moments. You may see it when your horse wakes from a nap, after a ride, during or after grooming, or while waiting for feed. Some horses yawn once or twice and move on. Others yawn in small bursts.
A horse that yawns several times a day but eats, drinks, moves, and behaves normally is usually fine. The pattern matters more than the count. A sudden change in how often your horse yawns, or yawning that comes with other signs, is what deserves a closer look.
One practical point: a horse wearing a very tight noseband may not be able to yawn at all. Restrictive nosebands prevent horses from performing normal comfort behaviors such as coughing and yawning [3]. If your horse used to yawn during tack-up and no longer does, check the fit of the noseband.
Why Is My Horse Yawning? The Main Causes
Relaxation and the transition out of stress
Yawning often shows up when a horse shifts from alert to calm. It can be part of settling after exercise or before sleep. This is the most common and most harmless reason.
Stabling and confinement
Stabling routines affect behavior. In one study, horses kept in overnight (night-stabling) were confined for about 13.6 hours compared with about 7.7 hours for day-stabled horses, and yawning occurred significantly more often during the longer confinement period [1]. That does not mean every yawn in a stall is a problem. It does mean that more yawning in a horse that spends long hours confined is worth noticing.
Social yawning
Horses can yawn in response to another horse's yawn. In a study of 48 horses on pasture, contagious yawning was more common between horses that shared good relationships, and horses responded faster to yawns from relatives [2]. If your horse yawns right after a pasture mate does, that is a normal social response.
Discomfort or pain
Yawning can accompany pain, including mouth, jaw, dental, and gastrointestinal discomfort. Pain is one of the recognized drivers of aggression in horses, and a painful horse may show other behavior changes along with yawning [4][5]. A horse in pain may pin its ears, lash its tail, or act irritable when handled [5].
Stress during ridden work
Conflict behaviors, which reflect short bursts of acute stress, are common in horses during dressage competitions, and bridle type and head position interact with how often they appear [6]. Yawning can be one of the behaviors a stressed horse shows under saddle, especially if the bit, noseband, or head carriage is uncomfortable.
Fatigue and recovery
Some horses yawn after hard work or during cool-down. This overlaps with relaxation and is usually not a concern on its own.
| Cause | Typical clues | How urgent |
|---|---|---|
| Relaxation | Yawning after work, grooming, or rest, normal appetite and attitude | Not urgent |
| Stabling or confinement | More yawning during long stall hours, less turnout [1] | Routine visit if it persists |
| Social yawning | Yawns right after a bonded herd mate yawns [2] | Not urgent |
| Mouth, jaw, or dental pain | Dropping feed, quidding, head tossing, resistance to the bit | Same-day call |
| Stress under saddle | Conflict behaviors during ridden work, head behind the vertical [6] | Routine visit, adjust tack now |
| Body pain or colic | Pawing, flank watching, poor appetite, irritability [4][5] | Emergency if colic signs |
Red Flags That Make Yawning an Emergency
Call your veterinarian right away if yawning comes with any of these:
- Pawing, rolling, flank watching, or no manure, which point to colic
- Dropping feed, quidding, drooling, or swelling around the jaw
- A sudden change in attitude, including new aggression when you handle the horse [4]
- Weight loss, poor coat, or a horse that seems depressed
- Yawning that never stops, or yawning with head pressing or circling
- Difficulty swallowing or nasal discharge with feed in it
Aggression toward people in horses is often linked to fear, pain, hormones, dominance, or learning, and a fearful horse may tuck its tail and turn its ears to the side while an offensively aggressive horse lashes its tail and pins its ears back [5]. If your horse's yawning comes with any new aggression, treat it as a pain or welfare signal and get help.
Safe Things You Can Do at Home While You Wait
- Write down when the yawning happens. Note the time, what your horse was doing, and how long it lasted. A simple log helps your veterinarian.
- Check the noseband. If it is tight enough to stop yawning, loosen it or remove it for now. Restrictive nosebands block normal comfort behaviors [3].
- Increase turnout if you can. Longer confinement is linked to more yawning, so more time out of the stall may reduce it [1].
- Watch the herd. If one horse yawns and others follow, that is social yawning and not a medical concern [2].
- Offer soft, soaked feed if you suspect mouth pain, and stop riding until your veterinarian examines your horse.
- Keep a safe distance if your horse seems irritable. Pain and fear can both drive aggression, and a horse that feels trapped in a stall can be dangerous [4][5].
Do not give any medication on your own. If your veterinarian prescribes something, the dose is calculated from your horse's weight and health, not from a general rule.
What Your Veterinarian Will Check and Test
Your veterinarian will start with a full history. They will ask about turnout hours, stall time, feed, recent training, tack changes, and when the yawning started.
The physical exam usually includes:
- A dental and oral exam, checking teeth, gums, tongue, and jaw movement
- Palpation of the jaw, neck, and throat
- Listening to the gut and checking for colic signs
- A lameness and back exam, since pain anywhere can change behavior
- A neurologic check if yawning comes with other odd signs
Depending on findings, your veterinarian may recommend blood work, dental radiographs, endoscopy of the airway, or an oral exam under sedation. If your horse shows aggression, your veterinarian may also discuss behavior and pain management together, since pain is one of the common drivers of aggression toward people [4].
If your horse's yawning is part of a broader breathing or coughing picture, some of the same logic used for other species can help you describe symptoms clearly. Our guide on why is my dog coughing and gagging and wheezing shows how owners can track timing and triggers, which is useful for any animal.
Prevention and Monitoring
Most yawning is not something you need to prevent. What you can do is keep your horse comfortable and notice changes early.
- Maximize turnout and social contact when possible. Longer confinement is linked to more yawning and other behavior changes [1].
- Check tack fit often, especially the noseband and bit. Bridle type and head position interact with stress behaviors during ridden work [6].
- Keep a simple behavior diary. Note yawning, appetite, manure, attitude, and work level.
- Schedule dental exams on your veterinarian's recommended timeline.
- Watch herd dynamics. Social yawning is normal, but a horse that suddenly avoids the herd may be hurting [2].
- Treat any new aggression as a welfare signal, not a training problem [4][5].
If you also own dogs, tracking symptoms at home is a skill that carries over. Our article on why is my dog panting so much explains how to separate normal from abnormal, and why does my dog keep shaking her head covers the same "look for the pattern" approach.
Limitations and When to Contact a Veterinarian
This article cannot tell you what is happening with your individual horse. Yawning has several possible causes, and only an exam can sort them out.
Contact your veterinarian the same day if your horse yawns constantly, drops feed, drools, resists the bit, or shows new irritability.
Go to emergency care now if you see colic signs such as rolling, pawing, flank watching, or no manure, or if your horse cannot swallow or is in distress.
Schedule a routine visit if the yawning is mild but has changed in frequency, or if your horse spends long hours stalled and you want help improving its routine.
Frequently Asked Questions
Is yawning in horses always a sign of relaxation?
No. Relaxation is the most common reason, but yawning can also show up with stress, confinement, or pain. Look at the whole picture, including appetite, attitude, and work.
Can horses catch yawns from each other?
Yes. Contagious yawning has been documented in horses, and it is stronger between horses with good relationships and between relatives [2]. If your horse yawns after a pasture mate does, that is normal.
Does a tight noseband stop a horse from yawning?
Yes. Restrictive nosebands prevent horses from performing normal comfort behaviors such as coughing and yawning [3]. If your horse never yawns during tack-up anymore, check the fit.
Could yawning mean my horse is in pain?
It can. Pain is one of the recognized drivers of behavior changes in horses, including aggression, and mouth or jaw pain can show up as yawning along with dropping feed or resisting the bit [4][5]. Any pain suspicion deserves a veterinary exam.
Does stabling make horses yawn more?
Research suggests it can. Horses kept in overnight were confined much longer and yawned significantly more often than day-stabled horses [1]. More turnout may reduce yawning in some horses.
Related Articles
- Why Does My Dog Keep Shaking Her Head
- Why Is My Dog Coughing And Gagging And Wheezing
- Why Is My Dog Panting So Much?
- Why Is My Dog Coughing And Gagging Randomly
- Why Is My Dog Coughing And Gagging Non Stop
- Why Is My Dog Drooling?
References
- The Effect of Stabling Routines on Potential Behavioural Indicators of Affective State in Horses and Their Use in Assessing Quality of Life. Animals : an open access journal from MDPI, 2023.
- Yawning in sync: implications for social cohesion in horses. Current zoology, 2025.
- Commentary on MacKechnie-Guire et al. Measuring Noseband Tightness on the Lateral Aspect of the Horse's Face. Animals 2015, 15, 537. Animals : an open access journal from MDPI, 2026.
- Behavior Problems in Horses - Horse Owners. Merck Veterinary Manual.
- Behavior Problems of Horses - Behavior. Merck Veterinary Manual.
- Influences of Double Versus Snaffle Bridles on Equine Behaviour at Dressage Competitions and Factors That Interact with Their Effect. Animals : an open access journal from MDPI, 2025.