Babies are remarkable from the very start, and the science behind how they grow, learn, and communicate is genuinely fascinating.
There’s something truly magical about the first months of life. Babies change and grow at an astonishing pace, and even though they may not be able to talk yet, their little minds and bodies are hard at work from day one.
Here are five brilliant baby facts that might just surprise you.
1. Babies can sign before they can talk
Most babies begin to use simple signs from around 6 months old, before they’re able to form words. It’s a clever way for them to express needs like “milk”, “more”, or “all done”, and it can be a brilliant way to reduce frustration while boosting early communication.
Sign language taps into the fact that hand coordination develops earlier than speech, giving your baby a way to tell you what they need long before words arrive.
2. Handedness starts in the womb
Some babies begin to show a hand preference even before they’re born, often favouring one thumb to suck. While hand dominance isn’t fully established until later, many children will show a clear preference by the age of 2 to 6.
So if your toddler always reaches for things with the same hand, they may have been practising since before they were born.
3. Toddlers have more neural connections than adults
Young children’s brains are bursting with twice as many synapses as ours. These connections form as they explore, learn, and experience the world, and are later refined through practice and repetition.
It’s why the early years are such a rich and important window for learning. Everything is new, and every experience is building something.
4. Toddlers can learn a new word every two hours
During the vocabulary explosion stage, usually around 18 months, toddlers can add up to ten new words per day. It’s one of the fastest learning periods in human development, and it can feel like they go from a handful of words to full sentences almost overnight.
If you’re in the thick of this stage right now, enjoy it. It’s genuinely one of the most amazing things to watch.
5. Picky eating is part of survival instinct
That fussy phase isn’t just defiance, it’s evolutionary. Between ages 2 and 5, many children become cautious of new foods. Known as food neophobia, this instinct once helped prevent young humans from eating something harmful.
So the next time your toddler refuses something they loved last week, you can blame thousands of years of human evolution.
Bonus: Why peekaboo is actually educational
Games like peekaboo help babies develop object permanence, which is the understanding that things still exist even when they’re out of sight. Around 6 to 8 months, babies begin to grasp this concept, which is why peekaboo goes from being meaningless to absolutely hilarious almost overnight.
