<|im_start|>user
When does baby start crawling?<|im_end|>
<|im_start|>assistant
There is a wide range in terms of when babies reach this development milestone. At 6 months old, they may start to rock back and forth on hands and knees, and by 9 months, they start to creep and crawl. However, each baby has their own timelines, and it's not uncommon to see babies skip crawling all together.<|im_end|>
