There are several reasons.
Crawling put stomach on the floor.
What is to be gained by doing it and why does your baby need this essential first form of locomotion.
Crawling is defined as any form of prone progression any way of moving in which the tummy is toward the floor.
In fact in one of her many studies on crawling babies karen adolph phd associate.
Certain breeds of dogs love tunneling and getting to crawl under the blankets is a natural behavior for them.
Crawling on your stomach on the floor in a cross pattern is hard work.
Crawling engages virtually all of the muscles of the body from the arches of your feet to your abdominal and neck muscles all of which are used in the process of moving your body forward across the floor.
Until then you can encourage your baby to get ready to crawl with these.
Dogs enjoy crawling under the covers and being close to you in a warm cozy spot.
Often just when your back is turned your baby will choose that moment to start crawling or scooting across the floor.