Why Cats Scratch Furniture (and How to Redirect It)

Cats scratch furniture because scratching is a normal, healthy need, not bad behaviour: it conditions the claws, gives the back and shoulders a deep stretch, and leaves both a visible and a scent mark. A cat working its claws down the side of your sofa is doing exactly what its body is built to do; the sofa is simply the most appealing surface available. The goal is never to stop scratching, but to redirect it.

Why scratching is a need, not a habit you can break

Scratching is hardwired, so every healthy cat will do it, indoor or out. It serves three jobs at once: it removes the worn outer sheath of the claws to keep them sharp, it lets a cat stretch the muscles and tendons of the legs, shoulders, and spine, and it deposits scent from glands in the paw pads alongside the visible scratch mark. International Cat Care describes scratching as an essential part of normal feline behaviour that owners should accommodate rather than suppress. Because it meets several needs at once, you cannot train it away; you can only give it a better target. For the bigger picture on reading your cat’s normal behaviour, see our cat behaviour guide.

Why your cat chose the sofa

Cats pick scratching surfaces by texture, height, and location, so the sofa wins on all three. A good scratching surface is sturdy enough to pull against without moving, tall enough for a full upward stretch, and sited somewhere socially important: near a doorway, beside a favourite napping spot, or in a busy family room. The arm of a sofa ticks every box. It does not wobble, it stands roughly the right height, and it sits in the heart of the home where a territorial mark counts for most. None of this is spite; in fact, ASPCA notes that cats often scratch most in prominent, well-used areas precisely because the marking signal matters there.

How to redirect scratching to a post

The reliable fix is to make a scratching post more appealing than the furniture, then make the furniture less appealing. Start with the post itself. It should be tall enough for your cat to stretch fully, at least 60cm (about 2 feet) for an average adult, and heavy or wall-anchored so it never tips. Offer both vertical and horizontal options, and more than one type of material (sisal rope, cardboard, carpet) because individual cats have strong preferences.

Then place it well and reward its use:

• Put the post directly next to the spot your cat already scratches, not hidden in a spare room.
• Rub it with catnip or scratch it with your own fingers so it carries an inviting scent.
• Praise or treat your cat the instant it uses the post, so the right surface pays off.
• Make the furniture dull in the meantime: cover the targeted area, or use double-sided tape, which cats dislike under their paws.

Once your cat is reliably using the post, you can move it a few centimetres a day if you need it somewhere else. A scratching post is one of the cheapest, highest-value pieces of enrichment you can buy; our indoor cat enrichment guide covers where posts fit alongside climbing, play, and resting spots.

Why you should never punish scratching

Punishment does not work for scratching, and it backfires, so it is off the table. Because scratching is a need rather than a choice, shouting, a squirt bottle, or any telling-off cannot teach a cat where it should scratch; it only teaches your cat that you are unpredictable and frightening, and that scratching is safest when you are out of the room. Both ASPCA and International Cat Care advise against all forms of punishment for scratching. It also tends to raise a cat’s general anxiety, which can make scratching and other unwanted behaviours worse; if your cat already seems tense, our cat anxiety and stress guide is a better starting point than any deterrent.

Why declawing is not the answer

Declawing is not a nail trim and it is not a humane solution to scratching. It is the surgical amputation of the last bone of each toe; it is illegal in the UK and much of Europe, and the American Association of Feline Practitioners opposes it because of the lasting pain and behaviour problems it can cause, including biting and litter-box avoidance. The humane alternatives are simple: provide attractive posts, redirect as above, and keep the claws trimmed (most indoor cats benefit from a trim roughly every few weeks) to blunt the tips and limit damage while the need itself is met properly.

A note from Hannah

When I first brought my cat Marmalade home, I bought a slim, knee-high post, stood it in the corner of the spare room, and could not understand why he carried on shredding the side of the armchair instead. The fix turned out to be almost embarrassingly literal. I moved a tall, heavy sisal post right up against the armchair he loved, rubbed a pinch of catnip into it, and draped a throw over the chair arm for a fortnight. Within a few days he was leaning his whole body into the post for his morning stretch, and I have not had to cover the armchair since. He was never being naughty; I had simply put the right thing in the wrong place.

This guide is general information, not advice for your individual cat. If scratching has changed suddenly, comes with other signs, or you are struggling to redirect it, your own vet or a qualified behaviourist who knows your cat is the best person to help.