When a child bursts into tears the moment the light goes off, or hides behind you at the sight of a dog, it can be hard to tell whether this is just a passing stage or something worth a closer look. AAP guidance explains that as children grow and face new experiences and unfamiliar situations, fears like this develop naturally, pointing to fear of being alone in the dark and fear of animals, such as a large barking dog, as common examples.
Why It Happens
According to AAP, preschool-age children haven’t yet fully developed the ability to separate reality from fantasy, so a monster from a dream or an imagined scene can feel like something that actually happened. That’s part of why fear of animals, snakes, the dark, and monsters shows up so often at this age. Logical explanations don’t always make the fear go away quickly, because a young child’s fear connects to a still-developing imagination rather than to adult reasoning.
How It Changes by Age
What a child fears tends to shift somewhat with age. Toddlers often react immediately to unfamiliar sounds or large animals, while preschoolers tend to develop a more distinct fear of monsters in the dark or imaginary creatures. These fears are typically a temporary part of exploring the world and adjusting to new situations, and they tend to ease naturally as a child gains more experience and more repeated moments of reassurance.
What Helps at Home
AAP suggests building a soothing bedtime routine — reading or singing to your child — so they feel safe and loved before lights-out. A nightlight, or a nightly “monster check” where you look together under the bed or in the closet, can offer real reassurance. A gradual approach also helps: make a list of feared things from easiest to hardest, and work through it together starting with the easiest one. If a child is afraid of dogs, for example, that might start with looking at a photo from a distance and slowly closing the gap over time.
Common Parent Mistakes
Dismissing a fear outright — “there’s no such thing, you don’t need to be scared” — can leave a child feeling misunderstood and more likely to hide how they feel instead of talking about it. On the other hand, relying every time on an exaggerated fix, like a “monster spray,” can backfire by making the child more anxious whenever that object isn’t available. A passing fear and a phobia aren’t the same thing: a phobia is far more intense and persistent, to the point that it interferes with daily life. AAP notes that when a phobia is suspected, a professional treatment approach involving small, gradual exposure to the feared object or situation can help.
When to Consider Talking with a Pediatrician
If reassurance and gradual exposure at home don’t reduce a fear over several weeks — or it worsens to the point of disrupting bedtime, daycare, or everyday outings — talking with a pediatrician or a child mental health professional can help. This information isn’t a diagnostic tool and doesn’t replace advice from a medical professional.