A cat, a room

Cats have different forms of communication, among them are meowing, purring, urine marking, but also scratching objects in their territory to indicate that this area belongs to them. When talking about why the cat scratches, it is not only the furniture, it can also be the door, the carpet, the curtains, etc. It can be thought that it is a bad behavior, however we must go beyond this simple thought and consider that the lineage of cats comes from a group of born hunters and that they are strict carnivores, therefore the behavior of sleeping a lot and sharpening ( scratching) nails is a basic instinct in them. They sleep because they can't afford to lose the energy they'll need to hunt, and they sharpen their claws by scratching (which is why the cat constantly scratches on rough surfaces such as upholstered furniture, rugs, or curtains).