Pregnancy is a time of immense curiosity, and you probably have endless questions about the tiny human growing inside you. Among the most common is: What is the first sense a baby develops? Maybe you guessed hearing, given how much we talk to our bumps. Or perhaps you thought of taste, a connection to what you’re eating.
While those are important, the actual answer is far more fundamental. So, let’s explore the rich, fascinating world of your baby’s prenatal development together.
The First Sense is Touch
The sense of touch is the very first to appear, beginning very early in pregnancy, around 8 weeks gestation. It’s the foundation of all future sensory experiences. At this incredibly early stage, tiny touch receptors first form on your baby’s face, especially around their lips and nose. This initial sensitivity is crucial for their first instinct—rooting and feeding. Over the following weeks, these receptors spread out to the palms and soles by 12 weeks and the abdomen by 17 weeks, eventually covering the entire body.
Long before they can see your face or hear your voice, your baby already experiences the world through the sensation of the uterine wall, amniotic fluid, and—most significantly—the gentle pressure when you rub your belly. By mid-pregnancy, researchers have observed fetuses reacting to external touch with movements and facial expressions.
Why the Sense of Touch Matters So Much
Touch is more than just a bodily sensation; it serves as the foundation for both mental and physical well-being. After birth, this is the major method neonates bond with their parents. Skin-to-skin contact regulates body temperature, heart rate, and eases the transition from the womb to the outside world, making it extremely beneficial.Gentle caressing and massage are among the quickest methods to quiet a fussy baby, giving them the security they require to grow.
Recent research continues to underscore how vital early touch is: studies from 2025 show that maternal depression in early pregnancy may affect a child’s later brain responses to affective touch, and new prospective studies are actively investigating how parental touch shapes infant development in the first six months. In short, touch isn’t just first—it’s foundational.
So, When Do the Other Senses Develop?
While touch starts the party, the other four senses quickly join in, each following its own incredible timeline.
- Hearing (Second Trimester): This sense kicks in around 18–20 weeks of pregnancy. By 24–25 weeks, babies respond more actively to outside sounds.
- Smell and Taste (In the Womb): Taste buds become active by 13–15 weeks. Amniotic fluid is flavored by the foods you eat—an early lesson in flavor preferences. Newborns recognize their mother’s unique scent within hours after birth.
- Sight (Last to Mature): Vision is the final sense to fully develop. Newborns see best from about 8–12 inches away—exactly the distance of your face while holding them—and prefer high‑contrast black‑and‑white patterns.
While We’re Talking Newborn Wonders… Answering Your Other Burning Questions
As you’re learning about what is the first sense a baby develops, other popular questions often pop up. Let’s answer them now!
Q: How many bones are babies born with?
A: A newborn arrives with roughly 275 to 300 bones, whereas adults have only 206. Many of these tiny bones are made of soft, flexible cartilage, allowing easier passage through the birth canal and room to grow. As your child grows, these smaller bones gradually fuse together.
Q: Babies are born without ____? (Hint: It’s a body part)
A: Kneecaps! A baby’s kneecaps (patellae) are made entirely of soft cartilage at birth, which cushions them during early crawling and tumbling. This cartilage slowly turns into bone (ossifies) between ages 2 and 6 and won’t be fully hardened until around 10–12 years.
Q: When does a baby get fingerprints?
A: Your baby arrives with their own one‑of‑a‑kind fingerprints already fully developed! These unique patterns begin forming very early in pregnancy, starting around 10–12 weeks, and are completely set by 24 weeks (6 months) of gestation.
Quick Tip for the New Parent Journey
All these incredible developments unfold at lightning speed. From the first sense of touch at 8 weeks to the vision of your face at 8 inches, it’s a beautiful and exciting journey. To make sure you feel supported every step of the way, tracking your baby’s physical growth is just as important as understanding their sensory world.
For a clear, easy‑to‑follow resource on newborn weight, length, head circumference, and what those measurements mean for your baby’s healthy development, check out our in‑depth guide:
👉 Newborn Anthropometric Measurements Guide
Having a handle on expected growth patterns can help you have more informed and confident conversations with your pediatrician.
References & Additional Reading
All the information in this guide is backed by trusted medical experts. For further reading, we recommend these top‑tier sources:
- BabyCenter: The first sense a baby develops – Touch
- Cleveland Clinic:Â How Many Bones Does a Baby Have?
- Stanford Children’s Health:Â Newborn Senses
- What to Expect:Â How Your Baby’s Sense of Touch Develops
- HealthyChildren.org (AAP): Newborn Smell & Touch
- UT Southwestern Medical Center:Â Womb with a view: Sensory development in utero
Disclaimer:Â
This article is for informational purposes only and does not constitute medical advice. Every baby develops differently. If you have concerns about your child’s growth or development, please consult your pediatrician or a qualified healthcare provider.
Written by SA – Pharmacist & Founder, newborncry.com