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Why Does My Cat’s Tail Vibrate? 4 Vet-Verified Reasons

Annaliese Morgan

By Annaliese Morgan

maine coon cat with large fluffy tail walking on grass

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Reviewed & Fact-Checked By

Dr. Amanda Charles

Veterinarian, BVSc GPCert (Derm) MRCVS

The information is current and up-to-date in accordance with the latest veterinarian research.

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Cats, consistent with their nature, communicate in mysterious ways, and using their tails is one of them. It might seem an odd part of their body to use as a communication mechanism, but felines use their tails to communicate in complex ways. Using a variety of different motions, positions, and movements, their tails can express what they are feeling or trying to say, or to elicit warnings. Their tails can be limp, tucked under their bodies, puffed out, tap the floor, swish around, be held up in the shape of a question mark, or twitch, and all of these mean particular things.

With all that said, it can be confusing to know just why exactly your cat’s tail starts to vibrate whenever you start petting them. With these explanations and understandings, now it’s time to piece all the clues together to discover the message they are trying to convey to you.


The 4 Reasons My Cat’s Tail Vibrates

1. Anger or Annoyance

Anger usually follows annoyance or impatience, and cats can become angry quickly, often without warning! Cats frequently become angry at situations, items, or others (like their playmates or people) for seemingly no reason. One minute they appear fine, and the next they are all moody, hissing and annoyed. It may be because they have had enough playtime or are done with your cuddles. They may feel they are not getting enough attention. Or maybe they are craving some food and would like it now!

Their tails will vibrate rapidly to let you know one of these thoughts is circulating in their head. An angry cat usually twitches their tail too, or they may tap or smack it on the floor if they are lying down.

2. Anxiety

Just as anxiety and stress are very common among humans, so are they with cats. Cats are highly sensitive creatures, and even what appears to us as the smallest of things can indeed be a big trigger for a cat.

It is important to realize a cat’s senses, hearing and smell, in particular, are exceptional. Their hearing levels, for example, are better and more advanced than in humans and canines. So, they might hear many things we don’t, and any one of the noises could spark angst. Likewise, there may be a more obvious cause, like a new baby in the house, builders, or an unfamiliar cat hanging around outside. Whatever the root cause, if a cat is anxious or restless, they might shake or vibrate their tail when you touch them to let you know that something is wrong.

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3. Impatience

Cats are known for being impatient and do not like waiting or being unable to obtain their goal or desire. Can they get in the door they wish to? Are you taking too long to feed them? Are you petting them too much or too little? Do they not like your new burning candle? Any of these types of scenarios will induce an impatient and frustrated cat when you pet them.

4. Happiness

In truth, a vibrating tail could very well represent a negative meaning. But there is hope! Out of all the reasons for a vibrating tail, this is the one you may hope for, and it’s because they’re feeling happy.

We all like to think that our cats are as happy and healthy as can be, and in this instance, an upright tail with a vibrating or shaking end usually means a happy cat. The context and nature in which this is done need consideration as well, but their happiness or excitement may be related to multiple causes, such as food, treats, toys, you, another person, catnip, or anything else that is considered their favorite.



Cat communication and behavior is a truly fascinating topic that can be studied further, either for personal interest or for professional purposes; just be sure to learn from reputable sources. The cat’s tail conveys many messages, and even one movement, such as a vibration or shaking tail, holds subsequent and multiple meanings.

If you are looking to get closer to your cat and understand them more, then hopefully this has given you some insight or inspired you to learn about cat body language a little more. Also, remember that cats are not little dogs, and using an understanding of canine behaviors to attempt to translate cat communication and care won’t cut it.

Featured Image Credit: Nils Jacobi, Shutterstock

Annaliese Morgan

Authored by

Annaliese graduated from Edinburgh as a veterinary nurse and went on to gain a diploma in advanced surgical veterinary nursing from London. During this time, she held head nurse positions in both small and mixed veterinary practices and was tasked with training other veterinary nurses. In addition to running the nursing department and nurse clinics, she also implemented new patient care protocols. ...Read more

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