Related abilities
Is able to play on tummy
Is able to hold head upright while crawling by 11 months
Primarily crawls or walks to get desired objects
Is frequently moving in and out of various positions (e.g. crawling, climbing, cruising, and walking) to explore and get desirable objects (13-18 months)
Crawls or walks to get desired item
Is frequently moving in and out of various positions (e.g. crawling, climbing, cruising, and walking) to explore and get desirable objects (19-24 months)