Do all children crawl? Why not?

some children have an apptitude for picking up on things faster than other. Also, physical developement can depend on nutrition, mental and physical stimulation, as well as environ ment. My daughter, for example, skipped crawling. She went from dragging herself right to walking. I beleive this is because i kept her in an upright position more than on her stomach. she was always in a walker, jumper, or other upright toy. I think this helped her to go right to walking. hope this helps.