Giovanni started crawling at 4 months, we just put him down on the carpet on a blanket and he saw something he wanted and he went for it. He technically didn't use all fours up until 6 months, but he got into everything by just using his arms lol

my son started at 6 months.

Elliot is almost 7 months, he's starting to army crawl

My son was crawling at 7 months my daughter was crawling at 9.

at seven months

my son's been trying to crawl for about a month already but when he's trying to do it hes like hoping on all fours