Grooming is very important in chimpanzee life. Chimps learn how to groom at an early age, and use it as a way to form and maintain social bonds with one another.
When Maisie was being hand-raised by Maryland Zoo’s care team (Maisie Playlist linked below), they made it a priority to ‘groom’ her so she could learn and get used to the behavior. Now, Maisie is seen regularly grooming and getting groomed within the troop!
More On Maisie!: https://youtube.com/playlist?list=PLFSD8pCtwrSX260FPT6oJ0bXlE1QFAMlR