* Retractible claws: Cats have specialized claws that are connected to tendons and muscles within their paws. These tendons allow the claws to be pulled back into a sheath of skin when they're not in use.
* Sheath: The sheath is like a protective covering over the claws. It keeps them sharp and prevents them from getting damaged when the cat is walking or playing.
* Extension: When a cat needs to use its claws for climbing, scratching, or defense, the muscles contract, extending the claws out.
So, while their nails are not completely hidden, they're usually tucked away neatly until needed, making them less likely to snag on things and helping them walk quietly.