Cats like to lick their armpits mainly because they think you are dirty. If a cat licks the same spot repeatedly, it means cleaning; in addition, cats can sense the owner's illness through their sense of smell, and will stay with them and lick them to help the patient relax and clean up the dirt on their body.

In addition, cats may lick their armpits because they are interested in specific smells, such as human armpit secretions. and smell. Some cats may be particularly attracted to certain scents, and may even show a preference for them when their armpit scent is stronger after human exercise.