To primatologists, the importance of touch is no surprise. Nonhuman primates touch each other extensively during grooming. And while grooming is ostensibly about hygiene, it would take only about ten minutes of grooming a day for an animal to stay clean. Instead, some species spend hours on it. Why? Remember those grooming cliques? In nonhuman primates, social grooming is important for maintaining social relationships. Touch is our most highly developed sense when we are born, and it remains a fundamental mode of communication throughout a baby’s first year and an important influence throughout a person’s life.