So long as there is mutual grooming, both parties benefit at a relatively low cost.

Looking back on those days, the warm physical contact of mutual grooming was the one thing he missed most about his own kind.

The groups also undertake mutual grooming and play at wrestling.

In human kind, mutual grooming is done to become more close to each other.

Human mutual grooming plays an important role in making friends.

A conspicuous means of bond formation is mutual grooming, on which an hour or more may be spent daily.

Hence, this study hypothesized that mutual grooming was related to relationship satisfaction, trust and previous experience of affection within the family.

Therefore, human mutual grooming plays an important role in pair bonding.

Also, mutual grooming plays an important role.