If allowed, they will maintain almost constant physical contact with members of their packs. (urbandognyc.com)
Attachment Parenting works on the basis that babies need constant physical contact; preferably skin to skin with very young or premature babies. (easybabylife.com)
According to the criteria, baby wearing is encouraged because it provides constant physical contact and easy access to the breast. (breastfeedingtoday-llli.org)