It's time to get moving! At 9 months, you are likely to see your baby begin to master the crawl (though some babies never crawl, but instead go straight from sitting to walking). She then builds on these efforts by pulling herself up on the furniture. She's gained so much control over her fingers that she can pick up small objects, and she'll probably want to feed herself with her fingers as much as possible. Banging objects is a favorite pastime now - your baby will bang two objects together or bang one on the table. And now you'll see that index finger strike out on its own as your baby uses it to poke at things.
In addition to continuing her language practice with longer vocalizations, you'll find your baby communicating nonverbally - maybe she'll wave bye-bye. She may not be ready to speak, but she'll associate words with their meanings. She knows her name and will pay attention when she hears it. And if you hide a toy under a cloth, your baby will understand that the toy is still there and uncover it herself.
Your baby has been attached to you for some time, but now she might exhibit signs of stranger anxiety, such as crying or turning away from unfamiliar people. This is a perfectly normal stage of development. Your baby might be up for endless rounds of peekaboo or pat-a-cake now; she'll delight in the use of her hands and the rhythm of the words.
Prepare in advance to get the most from your baby's next well checkup. Know what to expect and what issues to consider. 9-Month Visit