Scratching is a natural, essential cat behaviour — not spite. Cats scratch to maintain their claws, stretch their muscles, and mark territory with scent and visible marks. The goal is to redirect it, not stop it.
Scratching is a healthy, instinctive need, not naughtiness. It removes the worn outer layer of the claws to keep them sharp, gives a deep, satisfying stretch through the shoulders and back, and leaves both a visible mark and a scent (from glands in the paws) that says “this is mine”. A cat that scratches your sofa is doing something completely natural — just in the wrong place.
Cats prefer to scratch sturdy, textured surfaces in prominent locations — exactly what your sofa, carpet or door frame offer. They often scratch near where they sleep or at the edges of their territory, and after waking up. If the only appealing scratching surfaces in the home are your furniture, that is what they will use.
The solution is to provide scratching posts and pads that genuinely compete with the furniture: tall and sturdy enough for a full stretch (a wobbly post gets ignored), in materials cats love like sisal rope, cardboard or carpet, and placed where your cat already wants to scratch — next to the sofa, not hidden in a back room. Offer both vertical posts and horizontal pads, since cats have preferences.
Make the furniture less appealing while making the post more appealing: temporarily cover targeted spots with double-sided tape or foil, rub catnip on the new post, and reward your cat for using it. Keep claws trimmed, and consider soft nail caps if needed. Never punish scratching — it is a need they cannot suppress, and punishment only creates stress.
Keep exploring: Why does my cat bite me? · Why do cats knead? · Cat breed profiles
Most quirks are perfectly normal. If a behaviour changes suddenly or comes with other signs of illness, check with your vet. Full disclaimer.