Hiding while pooping is one of the most common behaviors toddlers display before completing toilet training, with one prospective study finding that roughly 70 percent of children do it at some point. The median age for the behavior to start is around 22 months, and the reasons behind it range from innocent mimicry of adult privacy to more complex responses involving shame, sensory sensitivity, or the pressures of toilet training itself. For most families, the behavior is benign and temporary, but it can signal complications worth paying attention to.
How Common Hiding Really Is
Parents often assume their toddler is the only one ducking behind the couch or standing rigidly in a closet to fill a diaper, but the behavior is widespread. In a prospective study that followed 378 children through toilet training, 263 of them met criteria for the “hiding group,” meaning they regularly sought a secluded spot before or during a bowel movement. That works out to about 70 percent of the sample. Among these children, 38 began hiding before any toilet training had even started, while 64 began hiding only after intensive training was underway. The rest started somewhere in between.1JAMA Pediatrics. Children Who Hide While Defecating Before They Have Completed Toilet Training: A Prospective Study
The fact that a sizable group began hiding before anyone mentioned a potty is telling. It suggests that toilet training pressure is not the only driver. Something more fundamental is going on developmentally, and the behavior appears across a wide range of families, though researchers have noted that cultural and socioeconomic factors could shift the patterns.1JAMA Pediatrics. Children Who Hide While Defecating Before They Have Completed Toilet Training: A Prospective Study
Why They Do It
There is no single explanation, but researchers have identified a few overlapping reasons that account for most cases. For some toddlers, hiding is straightforward imitation. They see the adults around them disappear into the bathroom and close the door, and they absorb the message that this is something you do in private. They lack the words or the physical ability to use a toilet, but they have already internalized the social norm. So they find their own version of “private” and go about their business behind a curtain or under a table.
For other children, the behavior is tied to fear or shame. Toddlers at this age are beginning to develop self-consciousness. They may feel embarrassed about the act itself or anxious about the sensation of having a bowel movement. A child who has had a painful or frightening experience with constipation, for example, might associate pooping with discomfort and want to be alone during the process.
A third group appears to start hiding in direct response to toilet training pressure. When parents introduce the potty and begin encouraging its use, some children react by retreating. This does not necessarily mean the parents are doing anything wrong. The shift from diapers to a toilet is a big deal for a small person, and hiding may be a way of maintaining control over a bodily function that suddenly feels like it has an audience. The prospective study cited above specifically identified all three of these pathways: imitating adult privacy, responding to fear or shame, and reacting to the pressures of training.2JAMA Pediatrics. Children Who Hide While Defecating Before They Have Completed Toilet Training: A Prospective Study
The Squatting Factor
If you watch a toddler who hides to poop, you will often notice a specific posture: they squat, sometimes gripping a piece of furniture or pressing into a corner for support. This is not random. Squatting straightens the path between the rectum and the anal canal, making it physically easier to pass stool. Research on body position and defecation in adults found that squatting widens the rectoanal angle to about 126 degrees, compared with roughly 100 degrees during normal sitting. The straighter the channel, the less straining is needed.3PubMed. Influence of Body Position on Defecation in Humans
Toddlers, who are close to the ground and naturally flexible, instinctively adopt this posture because it works. A standard toddler-sized potty or a toilet with an insert puts them in a seated position that is less mechanically efficient than the deep squat they prefer. This mismatch is worth keeping in mind when you are trying to transition a child from floor-squatting in a diaper to sitting on a potty. A small footstool that lets your toddler bring their knees above their hips can help recreate some of the squatting advantage on a toilet.
How Sensory Sensitivity Plays a Role
Some toddlers who hide are responding to sensory experiences that most adults barely think about. The feeling of stool passing, the cold air on bare skin, the sound of a flush, the brightness of a bathroom, the texture of a plastic potty seat — all of these are sensory inputs, and some children process those inputs more intensely than others.
Research on preschool-aged children with chronic constipation found that they scored significantly higher on measures of sensory sensitivity and sensory avoidance compared with matched peers. They were more likely to be over-responsive to oral, visual, and tactile input in general, not just in toileting situations.4PubMed Central. Contribution of Sensory Processing to Chronic Constipation in Preschool Children A separate scoping review identified 15 distinct challenging bowel-management behaviors that appeared potentially linked to sensory integration concerns, suggesting that the connection between sensory processing and toileting is broad and real.5American Journal of Occupational Therapy. Sensory Integration Concerns in Children With Functional Defecation Disorders: A Scoping Review
For these children, hiding may serve a self-regulation purpose. A quiet, dim corner with no one watching reduces the total sensory load enough for them to relax and go. If your child seems generally more sensitive to noise, light, texture, or unexpected physical sensations, their bathroom reluctance may have less to do with defiance or shame and more to do with the environment being genuinely overwhelming.
When Hiding Signals a Problem
For most toddlers, hiding is a phase that resolves as toilet training progresses. But it is not always benign. The same study that documented the high prevalence of hiding found a meaningful connection to three complications: stool toileting refusal (where a child will urinate in a toilet but refuses to have bowel movements there), constipation, and stool withholding. Children who did not hide during the study period were significantly less likely to develop any of these problems and also completed toilet training at a younger age.1JAMA Pediatrics. Children Who Hide While Defecating Before They Have Completed Toilet Training: A Prospective Study
This does not mean hiding causes constipation or withholding. The relationship is more tangled than that. A child who had one painful bowel movement might begin withholding stool to avoid pain, which leads to harder stool and more pain, which makes them more determined to withhold, and along the way they develop a strong preference for doing it privately. The hiding itself is a symptom of the cycle, not the root cause. Still, if your toddler is hiding and you notice any of these signs, it is worth addressing the constipation or withholding directly rather than waiting for the hiding to stop on its own:
- Hard, pellet-like stools: Small, dry, and obviously difficult to pass.
- Infrequent bowel movements: Going fewer than three times a week.
- Visible straining or distress: Crying, turning red, or arching their back during a bowel movement.
- Stool refusal on the potty: Willingly urinating on the toilet but asking for a diaper or holding stool until they can go somewhere private.
How to Respond When Your Toddler Hides
The single most useful thing you can do is not make it a battle. Drawing attention to the hiding with frustration, shame, or even intense encouragement tends to backfire. If a toddler is already sensitive about the act, adding an audience with strong opinions only increases the pressure.
A child-oriented approach to toilet training, where parents watch for signals that the child is developmentally ready and follow the child’s lead rather than imposing a rigid schedule, has been the dominant method recommended in pediatric literature for decades. A review of available research found that two main approaches exist: this gradual, readiness-based method and a more structured, endpoint-oriented method where specific toileting behaviors are taught step by step. Neither has been proven clearly superior because the data comparing them are thin, but both share one principle relevant here: respecting the child’s pace reduces conflict.6PubMed Central. How to toilet train healthy children? A review of the literature
With that principle in mind, here are practical steps that work for most hiding toddlers:
- Acknowledge without dramatizing: If you notice your child is about to hide, you can calmly say something like, “It looks like you need to poop. That’s totally fine.” Then leave it alone. Neutral language removes the charge.
- Offer the potty as an option, not a demand: “Do you want to try sitting on the potty?” is different from “You need to go on the potty.” If they say no, let it go. There will be another chance in a few hours.
- Make the bathroom less intimidating: A small potty in a room the child already feels comfortable in can be more effective than asking them to come into a large, echoey bathroom. Warm the seat, dim harsh lights, keep flushing optional until they are comfortable.
- Address the squatting preference: If your toddler clearly prefers squatting, set up a footstool so they can replicate that posture on the potty. A child whose feet dangle off a standard toilet or even a small potty may feel physically insecure.
- Keep stool soft: If there is any hint of constipation, work on the dietary side. Adequate fiber, water, and limited processed food keep things moving. A child who associates pooping with pain will resist any setup, no matter how welcoming.
Using Books and Visual Stories
Toddlers learn through narrative and imitation. Picture books that walk a character through the steps of using a toilet — pulling down pants, sitting, wiping, flushing, washing hands — can normalize the process in a way that feels safe and engaging. Research on using illustrated story books with children ages two to four found measurable improvement in toileting skills after the intervention, suggesting that visual, story-based learning translates into real behavioral change for this age group.7UNESA Journal. Pengaruh Buku Cerita Bergambar Terhadap Keterampilan Toilet Training Anak Usia 2-4 Tahun
The books work best when they are part of the regular reading rotation rather than pulled out only at potty time, which can feel like a lecture. If a child sees a favorite character going through the same motions they are being asked to do, the connection forms naturally. Videos and songs serve a similar purpose, though a physical book they can hold and page through at their own pace tends to give the child more control over the experience, which matters for a kid who is already feeling pressured.
The Privacy Paradox of Toilet Training
There is an irony at the heart of this whole situation that rarely gets discussed. Adults poop in private. We close and lock the door. We consider it one of the most personal acts of daily life. Then we ask a two-year-old to do it in front of us, often with running commentary and applause. From the child’s perspective, the request can be confusing: they have already figured out that this is supposed to be private, and now they are being told to perform it as a semi-public event.
This tension does not have a clean resolution, because you cannot leave a toddler unsupervised on a toilet. But you can minimize it. Once a child is reliably using the potty, start stepping back. Stand outside the bathroom door instead of sitting next to them. Let them call you when they are done. Some children will speed through the hiding phase if they feel that the potty can eventually be their private space too. The goal is not to make pooping a spectator sport forever — it is to bridge the gap between diapers and independence, and for some kids that bridge is shorter when you give them space along the way.
Children With Developmental or Sensory Differences
For children on the autism spectrum, those with sensory processing differences, or kids with developmental delays, hiding during bowel movements can be more persistent and harder to redirect. The sensory dimension is amplified: the feel of the potty seat, the sound of waste hitting water, the change in routine, and the loss of the familiar diaper sensation all register more intensely. The scoping review linking sensory integration concerns to functional defecation issues identified this population as especially affected, with a wide range of challenging behaviors tied to sensory over-responsiveness.5American Journal of Occupational Therapy. Sensory Integration Concerns in Children With Functional Defecation Disorders: A Scoping Review
If your child has a known sensory or developmental difference and hiding is entrenched, a pediatric occupational therapist can help design a toileting plan that accounts for sensory needs. This might involve desensitization steps (letting the child sit on the potty fully clothed first, then with a diaper on, then without), using weighted lap pads for calming input, or adjusting the physical environment to reduce overwhelming stimuli. Standard toilet training timelines are less relevant for these children, and pushing harder rarely helps. The readiness signals that guide training in neurotypical children may appear later or look different, so patience and professional guidance tend to be more productive than any particular strategy you could try at home on your own.
When to Bring It Up With Your Pediatrician
Hiding alone is not a reason to call the doctor. But a few patterns warrant a conversation. If your child is older than four and still refusing to have bowel movements anywhere but in a diaper in a hidden spot, the behavior has persisted beyond the typical range and may benefit from evaluation. If constipation has become chronic — meaning it has lasted more than a couple of weeks despite dietary adjustments — a pediatrician can assess whether something physical is contributing. And if stool withholding has escalated to the point where your child is in visible pain, going many days between bowel movements, or having soiling accidents because stool is leaking around an impacted mass, that is a medical issue, not a behavioral one.
Pediatricians see hiding toddlers constantly and generally regard the behavior as a normal developmental phase. The children who end up needing more help are typically those caught in the withholding-constipation cycle or those whose sensory profiles make the transition to a toilet genuinely difficult. For everyone else, the phase runs its course. Your toddler is not being defiant, weird, or difficult. They are figuring out a complicated bodily function while also learning about privacy, control, and the strange new world of the bathroom. Give them time, keep things soft, and save the fanfare for when they are ready for it.