A healthy adult horse has a resting heart rate of 28 to 40 beats per minute, which is much slower than a human’s. You can measure it with a stethoscope pressed to the left side of the chest or by feeling for a pulse with your fingertips at specific points on the body. Both methods are straightforward once you know where to place your hands.
What You Need Before You Start
The simplest and most reliable tool is a basic stethoscope. You don’t need a veterinary-grade model; an inexpensive one from a farm supply store works fine for monitoring heart rate at rest. A watch or phone with a seconds display is the only other piece of equipment required.
If you don’t have a stethoscope, you can still take a heart rate by palpating a pulse point (more on that below), though the heartbeat is easier to hear than to feel on a horse. Whichever method you choose, take the reading when your horse is calm and standing quietly. Even mild excitement or recent movement will push the number up and give you a misleading baseline.
Using a Stethoscope on the Chest
The horse’s heart sits in the front of the chest, largely tucked behind the heavy muscle of the upper foreleg. To reach it, stand on the horse’s left side and lift or slide the left front leg slightly forward. Place the stethoscope head just behind the elbow, pressed snugly against the body wall in the area between the 3rd and 5th rib spaces. You’re aiming for the girth area, roughly where a cinch would sit.
If the horse has a thick winter coat, you may need to press the stethoscope more firmly or part the hair with your fingers so the chest piece makes direct contact with skin. A loose seal against the coat creates static-like noise that drowns out the heartbeat. Once you have a good seal, you should hear a clear “lub-dub” sound. Each lub-dub counts as one beat.
Count the beats for a full 60 seconds while watching your timer. Shorter counting windows (like 15 seconds multiplied by four) are common shortcuts, but a full minute gives you a more accurate number, especially at the slow resting rates horses produce. At 32 beats per minute, for example, missing a single beat during a 15-second window would throw your calculation off by four.
Finding a Pulse Without a Stethoscope
The most accessible pulse point on a horse is the facial artery, which runs along the inside edge of the lower jawbone. Run your fingers along the underside of the jaw where the bone curves, and you’ll feel a cord-like vessel rolling under your fingertips. Press gently with two or three fingers (never your thumb, since you’ll pick up your own pulse instead) and count beats for 60 seconds.
Another useful site is the digital pulse, found at the back of the pastern just where it meets the fetlock. Place your first two fingers horizontally behind the pastern bone on either side of the leg. If you can’t feel anything, lighten your pressure, because it’s easy to compress the small blood vessel and lose the signal entirely. The digital pulse is faint in a healthy horse. Its main value is detecting inflammation in the foot: a strong, bounding digital pulse in one or both front feet is a classic early warning sign of laminitis or a hoof abscess.
Normal Ranges by Age
Heart rate in horses drops significantly as they mature. Knowing the right range for your horse’s age prevents unnecessary worry over a reading that’s perfectly normal for a foal but would be alarming in an adult.
- Newborn foals (first few days): 80 to 120 beats per minute
- Older foals (1 to 6 months): 60 to 80 beats per minute
- Yearlings: 40 to 60 beats per minute
- Adult horses: 28 to 40 beats per minute
Very fit horses, particularly endurance or sport horses in peak condition, sometimes rest at the low end of 28 or even slightly below. A rate consistently above 40 at rest in an adult that hasn’t just been exercised, startled, or handled in a stressful way is worth investigating.
What the Numbers Tell You
Resting heart rate is one of the most useful vital signs you can track because it responds to pain, dehydration, fever, and stress. A horse with mild colic might sit at 48 to 56 beats per minute. Rates above 60 at rest generally indicate significant pain, shock, or serious illness, and rates above 80 are an emergency.
Interestingly, research has shown that small heart rate increases alone aren’t reliable indicators of low-level pain. In one study, a painful stimulus raised the average heart rate from about 36 to just 38 beats per minute, a statistically measurable but practically tiny change. This means you shouldn’t rely on heart rate alone to judge whether your horse is uncomfortable. Facial expression, posture, behavior, and appetite often reveal mild pain more clearly than a stethoscope will.
Where heart rate becomes powerful is in tracking trends. If you know your horse’s normal resting rate is 32 and you find it at 52 one morning, that jump tells you something meaningful even if 52 wouldn’t alarm you in a different horse. Take a baseline reading on several calm days so you have a personal reference point.
Heart Rate After Exercise
How quickly a horse’s heart rate returns to normal after work is one of the best indicators of cardiovascular fitness. After moderate exercise, a fit horse’s heart rate typically drops below 60 within 10 minutes and returns to its resting range within 30 minutes. A horse that stays elevated well beyond that window is either unfit for the level of work being asked, overheated, or dealing with an underlying issue.
Endurance competitions formalize this concept: horses must present a heart rate at or below a set threshold (usually 64 beats per minute) at veterinary checkpoints to be allowed to continue. If you’re conditioning a horse, tracking post-exercise recovery over weeks gives you a clear, objective picture of improving fitness that’s hard to get any other way.
What to Listen for Beyond the Rate
While counting beats, pay attention to the rhythm and quality of the sounds. A normal heart produces a consistent lub-dub, lub-dub with even spacing. Occasionally you may hear an extra sound or a slight whooshing noise layered over the beat. These are murmurs, and in horses, they’re surprisingly common and often harmless.
Fit, athletic horses frequently have low-grade flow murmurs, soft whooshing sounds caused by the sheer volume of blood moving through a large heart. These are typically heard on the left side, low in the chest, and are quiet enough that they don’t obscure the normal heartbeat. They don’t indicate disease.
What should get your attention is a murmur that’s loud enough to be obvious even to an untrained ear, an irregular rhythm where beats seem to drop out or cluster, or any change from what you’ve heard on previous occasions. These findings don’t necessarily mean something is wrong, but they warrant a veterinary assessment that can include a more detailed cardiac exam. Getting familiar with what your horse normally sounds like is the single most useful thing you can do, because it makes any change immediately noticeable.