Quick Answer
Backward crawling before forward crawling is one of the most common and frequently alarming things parents notice in the 6 to 9 month window, and it is almost always entirely normal. It happens because the muscles that push (the arms) develop strength before the muscles that pull (the arms in a forward-reaching motion combined with the legs), and because the motor coordination required for forward locomotion is significantly more complex than the pushing movement that produces backward movement. Understanding why it happens, and what progression to expect, removes most of the worry associated with it. This article covers the motor development behind backward crawling, what typical progression looks like, the wide variety of crawling styles babies use, and what signs would actually warrant a conversation with your pediatrician.
The Motor Development Behind Backward Crawling
Crawling, in any direction, requires your baby to simultaneously bear weight on all four limbs, maintain a stable torso, and coordinate opposing limbs in an alternating pattern while propelling themselves through space. This is a genuinely complex motor task, and the backward version is the first achievable form because of a specific strength asymmetry in the early months.
When a baby is on their hands and knees or in a prone push-up position, their arm muscles are already doing significant work: pushing up from the floor has been practised during tummy time from early infancy. The arm muscles are therefore relatively strong at the pushing movement by the time crawling attempts begin. When the baby pushes with their arms, the path of least resistance is backward, because the arms are pushing against the floor surface and the body follows in the direction away from that push. The legs, which need to actively drive the body forward in true forward crawling, have not yet developed the coordinated strength and timing needed to take over the propulsion role.
The result is a baby who clearly wants to move toward something in front of them, pushes with increasing frustration, and moves steadily away from the target. This is one of the more reliably amusing and reliably frustrating early motor experiences of infancy, for baby and parent alike.
What Typically Happens Next
Backward crawling is usually a transitional phase of days to weeks rather than a fixed feature of the baby's locomotion repertoire. As the baby practises the pushing movement and develops awareness of what their body is doing, several things typically happen:
- The baby begins to experiment with weight shifting, moving from side to side on hands and knees, which builds the balance and coordination needed for forward movement
- The legs begin to contribute more actively, first in a dragging or pushing-off movement, then in a more coordinated alternating pattern
- The baby discovers that reaching forward with one arm while pushing with the other produces a different result and begins to refine this into forward crawling
The transition from backward to forward crawling typically happens within a few weeks of backward crawling beginning. Some babies skip the backward phase entirely or go through it so briefly it goes unnoticed. Others stay in the backward phase for a month or more, particularly if they are making good progress exploring by other means (rolling, sitting and reaching, bottom-shuffling) and have less motivation to refine the crawling movement.
The Wide Variety of Crawling Styles
Forward crawling on hands and knees (the classic crawl) is the most recognisable form, but it is far from the only normal crawling style. Parents are sometimes concerned when their baby's locomotion does not match the expected image, but developmental research shows a wide range of normal movement patterns at this stage:
- Classic hands-and-knees crawl: Alternating opposite arm and leg (right arm, left leg; left arm, right leg). The most common pattern
- Bear crawl: Hands and feet flat on the floor with straight or slightly bent arms and legs, bottom in the air. Perfectly normal and often transitions to walking relatively quickly
- Bottom shuffle: Sitting upright and propelling forward by pushing with the legs and hopping the bottom along the floor. Some babies bottom-shuffle exclusively and never hands-and-knees crawl at all before walking
- Commando crawl (belly crawl): Dragging the body along the floor with the arms while the belly remains in contact with the ground, legs trailing or pushing. A common stepping stone to hands-and-knees crawling
- Rolling as locomotion: Some babies become highly efficient rollers and use rolling as their primary form of getting around rather than crawling
- Asymmetric crawl: One arm and the opposite knee, combined with dragging one leg or using one side differently from the other. Often normal, particularly if it resolves as the baby develops
The key point is that crawling style in itself is not a reliable indicator of developmental concern. The question is whether the baby is developing some form of independent locomotion, showing interest in moving toward things they want, and continuing to make progress over time.
Is Crawling a Required Milestone?
A common parental and sometimes clinical concern is whether skipping crawling (or doing very little of it before walking) has developmental consequences. The evidence on this is more nuanced than popular belief suggests. Traditional developmental theory assigned significant importance to crawling as a prerequisite for later motor and cognitive skills, and some therapeutic traditions still emphasise it heavily. However, current pediatric consensus is that crawling is not a required milestone in the sense that walking, language, and social development are: some children skip it entirely and develop typically across all domains.
What matters more than the specific crawling style or duration is the trajectory: is the baby developing some form of self-directed locomotion, continuing to make motor progress, and hitting other developmental markers in the expected windows? A baby who is not showing any interest in mobility, is not weight-bearing on their legs when supported, or has significant muscle tone differences on one side of the body warrants assessment. A baby who moves around enthusiastically by bottom-shuffling, rolling, or an idiosyncratic crawl, and who is otherwise developing well, is almost certainly developing normally.
Supporting Crawling Development
- Maximise tummy time from birth: Tummy time builds the arm, shoulder, and core strength that crawling draws on. Babies who have had consistent tummy time from the early weeks typically reach crawling milestones with more ease than those who have had limited prone experience. If tummy time has been limited, increasing it from any age before crawling will still help
- Create motivation to move: Place interesting objects just out of reach to give the baby a reason to attempt locomotion. The desire to get somewhere specific is a powerful driver of motor development. A baby who has everything brought to them has less motivation to develop locomotion independently
- Provide a safe floor space for exploration: A firm, flat floor surface (a play mat on a hard floor is ideal) is better for crawling development than a very soft surface like a thick carpet or a sofa, which provides less resistance for pushing and makes the coordinated movement harder
- Avoid extended time in bouncers, jumpers, and carriers: While these are useful tools, extended time in devices that hold the baby in a fixed position reduces the floor time in which locomotion develops. Aim for substantial daily floor time from around 4 months
- Get on the floor with your baby: Your presence at floor level, making eye contact and encouraging movement, is a powerful motivator. Some parents find that crawling alongside their baby models the movement pattern in a way that simple encouragement from a height does not
When to Speak with Your Pediatrician
Backward crawling alone is not a red flag. The following signs, in combination or when persistent, are worth raising with your pediatrician:
- No interest in mobility of any kind (crawling, rolling, bottom-shuffling) by 9 months
- Consistent dragging of one side of the body while the other side moves normally, beyond the earliest crawling attempts
- Significant muscle tone differences between the left and right sides of the body
- Regression in motor skills that were previously present (losing an ability that was there)
- No independent sitting by 9 months
- General concerns about motor development alongside the crawling pattern, rather than backward crawling in isolation
The 9-month and 12-month well-child visits are natural points to raise any locomotion concerns, and your pediatrician will screen for motor development milestones at these appointments.
Key Takeaway
Backward crawling before forward crawling is normal and happens because arm pushing strength develops before the coordinated leg and arm action needed for forward propulsion. It is typically a transitional phase of days to weeks. A wide variety of crawling styles are normal, including bottom-shuffling, bear crawling, commando crawling, and rolling as locomotion. Crawling is not a strictly required milestone; some babies skip it and walk typically. Support crawling development with consistent tummy time, motivation to move, and substantial daily floor time. Speak with your pediatrician if there is no interest in mobility of any kind by 9 months, consistent asymmetric dragging of one side, regression in motor skills, or other concurrent developmental concerns.
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This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. If you have concerns about your baby's motor development, consult your pediatrician.