Babies usually start to crawl around the ages of 6 months to 10 months. Crawling is one of the milestones of a growing child. Before a baby starts crawling he/she must have mastered sitting without the help of anyone.
Crawling is a baby's first attempt to start moving around. Some babies start crawling before 6 months while others do not crawling even after 10 months, do not worry if your baby is over 10 months and not crawling, every baby is different.
Some babies even skip the crawling milestone altogether and they go directly to standing and walking.