why does my cat sit on my keyboard

You are working. The cat has decided you are not, or should not be, and has installed itself directly on the keyboard, tail across the screen, producing a document that reads mmmmmvvvvvv888. It is maddening and it is completely deliberate. Cats do this for reasons that make perfect sense to a cat. Here they are.

There is rarely a single cause. The keyboard sits at the meeting point of several things a cat wants at once: warmth, your attention, your scent, and the exact centre of whatever you are doing. Put all of those in one small rectangle and a cat will colonise it every time. The wonder is not that your cat sits on the keyboard, but that you expected it not to.

warmth and the centre of attention

Start with warmth, since so much of cat behaviour does. A laptop keyboard runs pleasantly warm, and a desktop keyboard sits in the warm pocket of air near a screen and a busy human, and a cat seeking heat, which is nearly always, is drawn straight to it. The keyboard is, from the cat's point of view, a heated platform you thoughtfully provided.

Then there is you. When you are working, your focus is entirely on the screen and entirely off the cat, and cats notice being ignored. Sitting on the keyboard is the single most efficient way to convert your attention from the screen back to the cat, because it physically blocks the thing that is stealing you. Many cats learn this fast: keyboard equals instant human attention, even if that attention is exasperated. To a cat, exasperated attention still counts. This is the same logic behind the attention-seeking in why does my cat bite me and the crying at a shut door, redirected onto your desk.

Your scent plays a part too. The keyboard, the chair, the desk, all of it is soaked in your smell, and a cat likes to be surrounded by the scent of its favourite human, so your workspace is a reassuring place to settle even when you are not the point. And cats simply like to be in the middle of the action. Whatever you are absorbed in must be important, so the cat wants to be on it, part of it, at the centre of it, which on a desk means on the keys.

how to work with a cat on your keyboard

You will not train the instinct out of a cat, but you can give it a better option than your keys. The most effective fix is to provide a warm, appealing spot right next to your workspace, a cat bed, a folded blanket, or a box on the desk beside you, ideally somewhere warm and with a view, so the cat can be near you and near the warmth without being on the keyboard. Many cats will accept the neighbouring throne if it is clearly the better seat.

Give the cat attention before it has to demand it, with a short play or fuss before you settle into a long stretch of work, so it is less inclined to interrupt you for it later. When the cat does land on the keys, resist the urge to make a big fuss, since a dramatic reaction is exactly the attention the cat was after and rewards the behaviour; instead calmly move it to its nearby spot, every time, with boring consistency. And accept a certain amount of it with good grace, because a cat that wants to sit where you are working is a cat that wants to be near you, which is, when you strip away the mmmmmvvvvvv888, a compliment wearing a very inconvenient disguise.

Related reading from my desk: why does my cat follow me to the bathroom and why does my cat sleep on me, more of a cat's need to be exactly where you are.

A cat that becomes suddenly, unusually clingy may be signalling stress or illness rather than simple company-seeking, worth a vet mention. I am a cat with opinions, not a veterinarian.