12 Month Baby Development – What To Expect

Your baby is finally 1 year old! Congratulations! What a great achievement for both of you. This past year you have both been on an amazing journey, and it is time to celebrate.

Now, as your baby turns one year old, you’ll finally start to see glimpses of what lies ahead – the makings of a toddler. This will clearly be showcased in their growing independence, the dawn of negativity, and their odd temper tantrums.

Their attention span will also be limited because life is now a series of super fun games. The most fun of all will be dropping things.  This is because it will be an absolute delight watching you stoop down just to pick them up time and again.

12 Month Baby Development - What To Expect
Image Source: Wikipedia.org

Traits At 12 Months

Your baby will enjoy giving and taking away toys, as well as playing games where they can put blocks in a container and then tip them over.

Naptime will be a nightmare. It is common for kids to resist napping at this age. They will also be fussy during bedtimes because they do not want to sleep at all. There is a lot going on in the world and they want to learn it all in one day.

Be ready for a very busy month as your baby will reach many new milestones, such as finally walking on their own. Also, they will transition from breastmilk and formula which offers a high level of nutrients to a growing baby.

Weight And Height

By 12 months there is a very big difference between the baby you see now and the newborn you had just a few months ago. Your baby is quite evolved, especially in terms of their looks.

Their height and weight have also changed greatly and they should have tripled their birth weight by now. Also, they should have grown at least 10 inches since birth.

Your baby should weigh between 21.3 – 21.9 pounds and their height should be between 29.1 – 29.8 inches.

It is, however, important to not get too caught up about his weight and height because this varies in babies. Healthy babies actually follow a specific growth curve. They stay in the same percentile range as they grow.

As long as your baby is sticking to this curve, then it is an indication of healthy growth. It does not matter whether they are on the same level as other babies.

In fact, as the baby becomes more and more active, their growth is likely to slow down a little bit. You may not be able to see a significant change in their weight, especially in the coming months.

You will also notice that their feet and hands are much stronger now. When your baby picks up a toy, it doesn’t fall back to the floor.


Not only is your baby able to see far away things, but they can also focus on things that are moving. Their motor skills are working hand-in-hand with their eyesight. It’s likely that when your baby sees an object, they will be able to focus on it, move towards it, and pick it up.

At this age, your baby will enjoy staring at and manipulating moving objects, trying to figure out how they work. Take your baby out often to look at new images.

What Can You Do To Stimulate Their Sight?

Add new images in their line of vision, such as paintings. In addition, take your baby to the park, supermarket, library, and anywhere you feel that they might be stimulated.

Your baby will also start to enjoy color patterns and images so read books to them that have pictures in them. Look for large and brightly colored pictures as they will love these the most.

Hold your baby close so they can study your face. Let your baby look at your eyes, your ears, your nose, etc. Lay your baby on a colorful mat and put some mirrors all around so they can look at themselves.

Play “peek-a-boo” and similar games so you can be able to teach them about object permanence – which is the idea that objects exist even when they are out of sight.

When To Talk To The Doctor

  • If your baby does not recognize you when they see you
  • If their eyes are wandering in and out or if they appear not to move at all
  • If they are unable to recognize distant objects
  • If there is regular tearing or redness or discharge coming from their eyes
  • If they are frequently squinting or sensitive to light
  • If they have droopy eyelids.
  • If they are constantly rubbing and scratching their eyes
  • If they are not interested in books or toys
  • If they do not have a good control of their eye movements

At this age, because you are probably pretty exhausted, you may be tempted to put on the television or give your baby your phone or tablet, just so you can get some rest. However, the best advice we can give you concerning this is simply not to.

The Academy of Pediatrics strongly cautions against allowing children below 2 years any screen time.

12 Month Baby Development - What To Expect
Image Source: Wikipedia.org


It has been a great year, watching your baby grow month after month. So, celebrate this milestone, call your friends over, and throw a birthday party. Most parents believe that the first one is the most important.

You should also gear up for the toddler years and the dreaded terrible twos. But all in all, have fun and enjoy each day with your little one.