How Much Does A Horse Heart Weigh? -Facts You Need To Know!

Last Updated on May 3, 2022 by Fabiola L.

In this article, we will talk about how much a horse’s heart weighs. I’m sure you’ve heard that a horse’s heart weighs the same as an adult human’s, which means that the horse has 3 hearts beating! If you’ve ever wondered how many horse hearts there are in an average horse, you may want to read this article.

And when you’re done, you’ll probably wonder why you didn’t know this information before!

Do Horses Have 4 Hearts?

Horses have four chambers in their heart. They have two ventricles. The left ventricle pumps blood to the lungs, and the right ventricle pumps blood to the rest of the body. The walls of the chambers are muscular. These muscles move the blood through the chambers. The valves in the chambers close when the chambers fill.

The valves open to allow the blood to exit the chamber. There are four sets of valves in the four chambers. The valves within each chamber are called septa (singular septum). The chambers are separated by valves.

How Big Is A Horse’s Heart Compared To A Human?

The heart size of a horse is about 20% larger than a human’s. A horse’s heart pumps blood at a rate of around 100 beats per minute. A human’s heart pumps blood at a rate of about 70 beats per minute. Humans have smaller hearts but can sustain much higher rates. Therefore, horses are very efficient in comparison to humans.

This explains why horses can perform physical activities for so long. The reason why a horse can sustain a high rate of beating is because of the horse’s strong, well-developed muscles. A horse’s heart is also bigger in terms of volume. A horse’s heart has three chambers, whereas a human only has two. This is the reason why a horse can maintain a high rate of beating.

Horse Heart Rate

The horse heart rate (HR) is the speed at which blood is pumped through the body. The horse’s heart rate is usually reported as beats per minute (bpm). A bpm value of 60 beats per minute is considered very slow.

A bpm value of 80 beats per minute is considered normal. A bpm value of 100 beats per minute is considered fast. The horse’s heart rate is a good indicator of whether the horse is stressed.

 where is a horse's heart located

How Much Does A Horse Heart Weigh?

A horse’s heart weighs about 1 kilogram, which is 2 pounds, 4 ounces. In order to find out how much a horse’s heart weighs, you first need to find out the weight of a liter of blood. Blood has a specific gravity of about 1,100 grams per liter. That means that a liter of blood weighs about 110 grams.

A heart weighs about 10% of the weight of a liter of blood, so a horse’s heart weighs about 10 grams or 1.1 kilograms. It may seem like a small amount, but that’s what a horse’s heart weighs. It’s a lot bigger than you would think. The heart of a human being is about 400 grams. A horse’s heart is about three times as heavy as a human heart.

Learn more about Normal Horse Heart Rate – Amazing Horse Heart Facts Explained!

How Does The Heart Pump Blood Through The Body?

When a horse beats its heart, the blood is pushed through the veins into the arteries. Then when the blood reaches the lungs, it goes into the pulmonary artery, and from there, into the capillaries. Once the capillaries are filled, they release the blood into the venules. The blood travels through the veins and into the right atrium of the heart.

From there, it moves into the right ventricle, then the left atrium, and finally into the left ventricle. Once the heart has pumped all of the blood to the various parts of the body, it starts again. This time, it will send the oxygen-rich blood back to the heart, where it fills the pulmonary veins.

What Are The Main Functions Of A Horse’s Heart?

A horse’s heart consists of two chambers that help circulate blood. The right atrium pumps blood to the lungs. The left atrium pumps blood back to the heart. A horse’s heart also contains four valves that regulate the flow of blood through the chambers.

There is the tricuspid valve, which allows blood to pass from the right atrium to the right ventricle; the mitral valve, which lets blood flow from the left atrium to the left ventricle; the pulmonary valve, which directs blood from the left ventricle into the pulmonary artery; and the aortic valve, which takes blood from the left ventricle and returns it to the aorta.

Final Words On How Much Does A Horse Heart Weighs!

In conclusion, the study was not able to find a statistical difference between the two groups. This means that, at least at this point, it doesn’t appear that the heart rate of the horses is a significant factor. So, how much does a horse’s heart weigh? A horse’s heart weighs approximately 1/7th of its body weight.

This information can be helpful for veterinarians when performing heart weight-to-body weight calculations.


Can a horses heart explode?

No, but that doesn't mean the heart of a horse is indestructible. Horse hearts don’t seem to suffer the same fate as human hearts in terms of getting damaged after death. However, there are cases where horses can die from their heart rupturing.

Where is a horse’s heart located?

A horse's heart is in the lower part of the rib cage. This is called the ventral thorax. It is located between the lungs and the diaphragm. The two lowermost ribs, called the xiphoid process, support this part of the thoracic cavity. If you were to lift your ribcage up, you'd see that the heart is suspended from the inside wall of the thoracic cavity.

How big is a horse’s heart?

To know this fact, we need to look to a very specific place. If we’re looking for an answer to this question, we should look for it in our hearts. The size of a horse’s heart is a scientific measurement. A normal heart is 3 to 5 times its own weight (in horse terms). A large horse’s heart weighs more than 7 pounds. This fact doesn’t really give us any sort of insight into what a horse is thinking or feeling, but it does give us a way to gauge the importance of a situation to an animal.

What are the signs of heart problems in horses?

You can tell if a horse is having health problems by checking its pulse, temperature, and breathing rate. If a horse shows signs of stress or illness such as rapid breathing, loss of appetite, lethargy, muscle tremors, rapid heartbeat, or muscle weakness, he or she may need emergency medical care.

Read more about How Much Does A Thoroughbred Horse Weigh?