L.H.
Rest easy Mom. My son was almost 9 months old before he could sit up on his own. He was also a little chunk. He never crawled either. It is my understanding that unless they can sit up and develop those tummy muscles they cannot crawl because they use the tummy muscles in holding them up on all fours. Now, my son may not have sat up until he was almost 9 months old and didn't crawl, but he could climb. He started walking at just over 10 months and my 11 months he could run with out taking a tumble. Bless my poor mother, I started walking (but hanging on to things for the first few months) at 5 1/2 months. (I still apologize for that, too. LOL) By the time I was a year, I was climbing up on top of the fridge. So, is your daughter on target with her developement? Most likely she is. It's always best, if you have questions about it, to talk to your doctor. However, she is on her own track and will develop at a rate all her own. Once she gets a bit older you will be able to recognize her growth and development patterns more easily. HTH