The reasons why cats sharpen their claws:

1. Keep their claws sharp. In nature, sharp claws are crucial for cats to hunt, climb trees, and escape danger, so cats will often polish their claws to prevent them from becoming dull.

2. Mark the smell. Cat scratching behavior is one of the ways cats mark their scent. There are scent glands called interdigital glands near the cat’s toes and pads. When the cat scratches an object, the cat’s information will be retained in the scratched area. .

3. Relieve stress. Cats will also be irritable and need a way to vent. At this time, most of them will sharpen their claws to relieve stress.

4. Stretch your body. When cats sharpen their claws, their bodies are in a very stretched state. Cats that have just woken up, or cats that have just come out of the cage, like to sharpen their claws first.

Methods to prevent cats from scratching furniture:

1. You can spray an odor that cats don’t like on the furniture where cats like to grind their claws. After a few times, the cat will I will hate this furniture.

2. Provide an allowed area for cats to sharpen their claws. Corrugated scratching boards, cat posts, or homemade wooden stakes are all acceptable.

3. Trim the cat’s claws neatly. One of the reasons cats scratch furniture is to sharpen or shorten their claws, so you can trim your cat's claws regularly.