Somewhere along the way, crawling became the infant-development version of getting into an Ivy League preschool: apparently mandatory, morally significant, and proof your baby will one day run a hedge fund.
They crawled at six months? Gifted.
They belly-scooted at nine months? A future engineer.
They skipped crawling and walked? Obviously doomed to poor handwriting, weak core muscles, bad SAT scores, and eventually a career in crypto.
Let’s calm down.
Crawling is a perfectly normal way many babies get from Point A to the dog bowl. It is cute. It is useful. It is often the beginning of your home’s long war against unsecured cabinets.
But it is not a required developmental milestone.
The CDC removed crawling from its developmental surveillance checklists in 2022 because crawling is wildly variable: babies crawl at different ages, use different styles, and some healthy, typically developing children simply do not crawl at all. The evidence also does not establish that crawling itself is necessary for later walking, cognition, fine-motor skills, or the ability to become a decent adult who can return a shopping cart.
The Great Crawling Panic
For decades, pediatric culture treated development like a rigid obstacle course:
Roll.
Sit.
Crawl.
Stand.
Walk.
Eventually disappoint your parents by choosing a liberal-arts major.
That old framework assumed every child had to pass through the same stages in the same order. Modern developmental science has inconveniently pointed out that babies did not receive the memo.
Some crawl on hands and knees. Some army-crawl like tiny exhausted Marines. Some scoot on their bottoms, roll across the room, crawl with one knee up, bear-walk on hands and feet, or simply decide that furniture cruising is more efficient than dragging their bare stomach across a floor containing three-day-old Cheerios and whatever the dog contributed.
The important concept is independent mobility, not whether your child performs the officially sanctioned “hands-and-knees crawl” with the elegance of a baby in a diaper commercial. Research summarized in Pediatric Physical Therapy found that the benefits often attributed to crawling appear related to having mobility experience generally—not to crawling specifically.
Why Grandma Thinks Babies Crawled Earlier
Grandma may swear that “babies used to crawl earlier.” She is not necessarily wrong. She is just leaving out a moderately important historical detail: babies used to spend much more sleep time on their stomachs. Before the “Back to Sleep” era, prone—or stomach—sleeping was common. Babies who slept prone were already spending long stretches on their bellies, which gave them an enormous amount of practice lifting their heads, pushing up, shifting weight, and generally preparing for the glamorous career of floor transportation.
A prospective study of 351 healthy term infants found that prone sleepers reached several early motor skills—including creeping, crawling, sitting, and pulling to stand—earlier than back sleepers. But here is the part that gets skipped when people are busy ordering an “infant crawling confidence course” online: all infants achieved the milestones within the normal range, and there was no significant difference in when they walked.
So yes: more belly time during sleep could make some early gross-motor skills appear sooner. No: that does not mean we should revive stomach sleeping because Susan from Facebook is anxious that little Brayden has not crawled by the exact date printed on a milestone blanket. Back sleeping remains the safer sleep recommendation. A modest short-term difference in early motor timing is not a reason to trade a proven safe-sleep practice for a faster crawl across a laminate floor.
Tummy Time: Helpful, Not Homework
This is not an argument for raising babies horizontally in a collection of “containers” until they develop a neck like a sea turtle. Supervised tummy time while awake is useful. Floor play is useful. Letting babies move, reach, roll, pivot, push up, and explore is useful. It builds strength, tolerance for prone play, and opportunities to figure out their own weirdly effective methods of movement.
What is not useful is converting parenthood into an unpaid physical-therapy internship because your eight-month-old has chosen butt-scooting over crawling.
Your baby does not need a crawling boot camp, a developmental concierge, a $299 “neurological organization” program, or a custom mahogany crawling tunnel shipped from Scandinavia by a woman named Moonbeam who has a certificate in “infant alignment.”
They need safe floor time, interaction, play, routine well-child care, and an adult who can resist Googling “my baby crawls sideways—is this autism?” at 2:14 a.m.
Enter the Crawling Industrial Complex
And now, because apparently ordinary parental anxiety was not profitable enough, we must revisit the gloriously bizarre world of patterning.
Many, many, many years ago—beginning in the 1950s—physical therapist Glenn Doman and psychologist Carl Delacato promoted a theory that children with neurologic or developmental challenges needed to repeat supposedly evolutionary movement stages: reptile-like belly crawling, then creeping, then upright movement. Their program, associated with the Institutes for the Achievement of Human Potential, had parents performing intensive repetitive movement exercises with children in hopes of “organizing” the brain.
This was not simply, “Let your child play on the floor.” No. That would have been free. This was a theory-heavy, labor-heavy system that implied parents could manually shepherd a child’s brain through the evolutionary ladder if they just crawled, patterned, and committed hard enough. Nothing says evidence-based medicine like telling exhausted parents that their child’s neurologic future depends on reenacting Planet of the Apes in the living room.
The medical criticism was not subtle. Major medical and health organizations described patterning as “without merit,” citing the absence of scientifically sound evidence and the program’s excessive, undocumented claims. Independent studies failed to validate the method.
The American Academy of Pediatrics has repeatedly warned against the Doman-Delacato approach, describing its underlying theory as outmoded and oversimplified; reporting on the controversy notes that the Academy’s position has remained unchanged for decades.
About That Treadmill
To be fair, treadmill training is a real area of research in select clinical settings—for example, it has been studied as an intervention to support earlier walking practice in some children with Down syndrome. That is not the same thing as declaring that every baby needs a mechanized conveyor belt to prevent future algebra failure. The historical patterning crowd’s broader message was the problem: crawl early, crawl often, crawl correctly, and perhaps the universe will reward you with superior neurologic organization.
This is how medicine-adjacent nonsense often works. Start with something true—movement matters. Add a dash of fear—your child will fall behind. Sprinkle in evolutionary jargon. Then sell the parents a program, a track, a treadmill, a table, a course, or a lifetime supply of guilt.
And suddenly Mom and Dad are taking turns crawling around the house like they are training for a very low-budget remake of The Human Centipede: Montessori Edition.
What Actually Matters
A child who skips crawling but is otherwise progressing—moving independently in some fashion, bearing weight appropriately, pulling to stand or cruising when expected, communicating, interacting, and continuing to gain skills—is not automatically in trouble because they failed the crawling audition.
That said, “crawling does not have to happen” is not the same as “ignore every concern and let TikTok diagnose your child.” Talk with your pediatrician if your baby has: Loss of skills they previously had. Persistent marked asymmetry, such as always using one side much more than the other. Very poor head or trunk control. No interest in moving or bearing weight as development progresses. Difficulty sitting independently around the expected period. Concerns in more than one developmental area, especially movement plus language, social interaction, feeding, or muscle tone.
The absence of crawling alone is not the issue. The whole developmental picture is the issue. Pediatric development is not an escape room where one missed clue means the building explodes.
The Bottom Line
Crawling is an adorable, messy, optional chapter in infant mobility—not a mandatory prerequisite for walking, reading, calculus, college, or becoming a well-adjusted taxpayer.
Let babies have supervised floor time. Let them experiment with movement. Keep them on their backs for sleep. And please do not enroll them in a crawling treadmill intervention run by someone who believes the key to human neurodevelopment is making families repeatedly cosplay amphibians.
Your baby is not behind because they skipped crawling.
They are simply optimizing the route.
Any advice or information given in this blog should not supersede consultation with your pediatrician or practitioner of choice. Every child is unique, and medical decisions must be made in partnership with the healthcare provider who knows your child’s full history. This blog is intended for educational and informational purposes only, not as a substitute for personalized medical care.If you are looking for medical advice that is evidence-based, ethically grounded, and uncompromised by industry influence, you are in the right place.
Sources:
Kretch KS, Willett SL, Hsu L-Y, et al. “Learn the Signs. Act Early.”: Updates and Implications for Physical Therapists. Pediatric Physical Therapy. 2022;34(4):440-448.
Davis BE, Moon RY, Sachs HC, Ottolini MC. Effects of Sleep Position on Infant Motor Development. Pediatrics. 1998;102(5):1135-1140.
Systematic review: Benefits of Treadmill Training for Patients with Down Syndrome. The evidence concerns selected therapeutic contexts and should not be distorted into a universal infant-crawling prescription.