Crawling is a complex skill that should be assessed by health care professionals. Occupational therapists will continue to assess children’s crawling with standardized screening and evaluation tools. The CDC Developmental Surveillance Milestone Checklists are meant to be used by parents and caregivers and do not require special training. Developmental Surveillance Milestone Checklists do not replace the need for formal developmental screening and evaluation tools by occupational therapists and other skilled health professionals.