Cats groom themselves by licking their fur and skin with their rough, barbed tongues. This helps to remove dirt and debris, as well as spread natural oils throughout their coat. To keep their coat healthy and shiny, it is important to provide cats with regular brushing and combing, as well as a balanced diet that is rich in omega 3 fatty acids. Additionally, providing cats with plenty of clean, fresh water can help to keep their coats looking and feeling healthy.