When did your babies start crawling?

My daughter is gunna be 9 months next week and still isnt crawling with her knees yet, she is kind of like scooting herself on her tummy if that makes sense. How about your baby?

Mine both started around 4 months

My son will turn 6 months old in 6 day and he will only get on his hand and knees and that's it but he scoots on his belly @ellasmama1012

7-8 months