Females maintain both social relationships and hygiene through grooming. Grooming occurs regardless of climate or season. Females which are matrilineally related groom each other more often than unrelated individuals. Females will also groom unrelated females to maintain group cohesion and social relationships between different kinships in a troop. Nevertheless, a female will only groom a limited number of other females, even if the group expands. Females will also groom males, usually for hygienic purposes, but it can serve to attract dominant males to the group. Mothers pass their grooming techniques to their offspring most probably through social rather than genetic means.