Why do cats purr?

  • Date: January 26, 2022
  • Time to read: 4 min.

Have you ever been mesmerized by the sound of a cat purring? Cats have captivated humans for centuries with their unique personalities and behaviors, and one of the most endearing of these is purring. But why do cats purr? While it’s still not fully understood, there are a few theories that can help us understand why cats purr and why it’s a sign of contentment and joy for both cats and humans alike.

Understanding the Purring Sound of Cats

Cats are one of the most popular pets, and they are known for their adorable purring sound. This sound seems to be a cat’s way of communicating with their owners, and it can be a sign of contentment or distress. But why do cats purr? What is the purpose of this sound, and why do cats make it?

The Physical Benefits of Purring

One of the most popular theories as to why cats purr is that it has physical benefits for them. Studies have shown that cats purr at a frequency of 25 to 150 Hertz, which is known to have positive benefits on their bones and muscles. This frequency helps to stimulate bone and muscle growth, and it can also help to reduce inflammation and heal wounds.

In addition to the physical benefits, purring may also help cats to relax and ease any stress or anxiety they may be feeling. The sound of a purr can be calming and soothing, making it a great way for cats to destress and feel more relaxed.

Social Purring

Another possible reason why cats purr is that it is a form of communication between cats and their owners. Cats may purr as a way of expressing their love and affection for their owners, or as a way to get attention.

Cats may also purr when they are feeling threatened or scared, as this is a way for them to show their submission and ask for comfort from their owners.

Purring can also be a way for cats to comfort and bond with other cats. Kittens will purr to their mothers as a way to get her attention and let her know that she is nearby. This purring can also be a way for cats to bond with each other and form strong relationships.

The Mystery of Purring

While there are a few theories as to why cats purr, the exact reason is still a mystery. It could be any combination of the reasons discussed above, or there could be more to it that we don’t know about yet.

The purr of a cat is one of the most endearing sounds, and it is one of the many things that make cats so special. So the next time your cat purrs, take a moment to appreciate the mystery of this sound and the bond that it can create between cats and their owners.

**Common Myths About Why Cats Purr**

When it comes to cats, there are many myths and misconceptions about why they purr. Here are some of the most common myths and the facts behind them.

Myth: Cats Purr to Show Happiness

While cats often purr when they are content and relaxed, this isn’t always the case. Cats may purr when they are in pain or distress, or even when they are trying to show dominance.

Myth: Cats Purr Only to Communicate with Humans

Cats may purr as a way to communicate with humans, but it is also a way for cats to communicate with each other. Cats may purr to show affection or to express their feelings towards another cat.

Myth: All Cats Purr

Not all cats purr. Some cats, such as the bobcat, do not make the same purring sound that domestic cats do.

Myth: Cats Purr by Vibrating Their Vocal Cords

Cats actually purr by vibrating the muscles in their larynx and diaphragm. This is why cats can purr even when they aren’t making any noise.

Frequently Asked Questions

Why do cats purr?

Answer: Cats purr as a way of communicating contentment, security, and well-being. It may also be a way to self-soothe, as it has been found that purring can reduce stress and even promote healing.

Why do cats knead?

Answer: Cats knead with their paws to show contentment and to mark their territory with scent glands located in their paw pads. Kneading may also be a vestige of kittenhood when they kneaded their mother’s mammary glands to stimulate milk flow.



Cats purr for a variety of reasons, including physical benefits, stress relief, and communication with their owners. The frequency of the purr (25-150 Hertz) can help to stimulate bone and muscle growth and reduce inflammation. Purring can also be a sign of love and affection, a way of getting attention, or a way of expressing submission and asking for comfort. The exact reason cats purr is still a mystery, but it is a sound that is sure to bring joy to any cat owner.

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