Cat Scratching - What You Can Do
Why Do Cats Scratch?
All members of the feline family except cheetahs have retractable claws. When a cat is walking around, the claws are retracted and don't catch on anything. This is also partly why cats can be so stealthy.
The claws grow somewhat like human fingernails, but also will shed the outer sheath periodically, leaving a sharper claw beneath.
To aid in removing the sheaths, cats scratch, often by stretching up and pulling downward. This action also helps to stretch out the spine and leaves a scent mark.
Scratching is a natural and necessary behavior for cats.
You cannot teach them never to scratch. However, you can provide an adequate scratching surface and then teach them to scratch only on that surface.
It is very important to provide appropriate scratching opportunities for cats right from kittenhood, so they learn where and where not to scratch.