Cats can live their entire lives without bathing if they don't go outside and have a clean home environment. However, for personal hygiene, it is recommended to bathe your cat once or twice a month.
Cat owners don't need to worry too much about their cat's hygiene, nor do they need to bathe their cats frequently, because cats are animals that know how to clean themselves. 
Everyone knows that cats groom themselves frequently. Even if their tongues can't reach certain areas, they will use their paws to groom themselves. It can be said that cats spend more than half of their time grooming themselves with their tongues, except when they are sleeping.
Cats use their tongues to groom themselves, which not only cleans away dust but also keeps them clean and comfortable. As a result, cats are generally very clean and do not need to be bathed frequently.
Cats secrete natural oils from their skin, which lubricate the skin and nourish the fur. Cats groom themselves with their tongues, distributing these oils evenly throughout their bodies, forming a protective film that also helps resist harmful substances.
