crawling?

tiphnie

I have a happy healthy (maybe a little to healthy lol) 6 month old who shows 0 interest in crawling but if you within in your lap will grab you and stand up on his own? he doesn't really like tummy time either and will roll over and try to sit up on his own (uses his arms to push up from behind himself or will grab into nearby person to pull up) anyone else's LO do this? did they ever really crawl or just start walking?