Kathy Dettwyler wrote: <<Crawling does not seem to be a necessary stage of human development.>> Thanks for sharing that, Kathy. My youngest, now 7yo & "practically perfect" :), only "scooted" in a sitting up position with one foot out front & one behind. Apparently it's not that uncommon, but of course, I was told by many she was missing that essential crawling phase of development. Chris Mayou