Organs of the Horse – Take a Look Inside

Just as it is with humans, the horse’s skin is the largest organ of the body. However, this blog post is dedicated to the organs that we cannot see from the outside. Let’s take a look inside the horse and also answer the question “Why can’t horses throw up?”.

Everything About a Horse's Organs

Horse's Nasal Cavity

Horses, like dogs, are also real sniffers and can smell scents up to two kilometres distance.

Unlike other animals, horses cannot breathe through their mouths. They only inhalthrough their nostrils. In addition to the main nasal cavity, a horse is equipped with a total of seven sinuses.

Why Can Horses Not Throw Up?

The esophagus is about 1.5 m long and can transport the ingested food into the stomach within 15-20 seconds. At the same time, the peristalsis of the esophagus, a tubular muscle, is only capable of moving in one direction – which is why the following applies: Horses can’t vomit!

The Horse's Heart

The heart of a human being is about the size of a fist and weighs about 300 grams. The heart of an average horse, on the other hand, weighs about 1% of its body weight. At a weight of 400 to 450 kg, a horse’s heart weighs about 4 to 4.5 kg. However, the actual heart weight varies depending on breed, training load and condition, and other individual factors.

The basic frequency in a calm state is about 30 to 40 beats per minute. In the case of flight, however, this frequency can skyrocket up to 250 beats per minute. This is a vital ability for flight animals, as they need to be able to escape from a suddenly appearing predator as quickly as possible.

The Horse's Lungs

One deep breath, please! A horse does this between 8 and 16 times per minute. With each breath, it inhales and exhales 6 to 8 litres of air. If you calculate this over the whole day, at least 70,000 litres of air flow through a horse’s lungs.

Interesting: The total lung volume of a horse with a body weight between 500 and 650 kg is about 40-55 litres. Quite a lot, isn’t it?

Save this graphic and have an overview of all your horse’s important organs at your fingertips:

Anatomy x Happie Horse App

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