At 6 months old, babies are developing rapidly and reaching important milestones. Here are some things your 6-month-old baby should be doing according to the search results:

• Social Development: Babies learn by talking, playing, and interacting with others. You can use “back and forth” play with your baby, where you smile when your baby smiles and copy their sounds. This helps them learn to be social. You can also “read” to your baby every day by looking at colorful pictures in magazines or books and talk about them. Respond to your baby when they babble and “read” too. For example, if they make sounds, say “Yes, that’s the doggy!”
• Language Development: At 6 months, your baby will start using sounds to express emotion. They may mimic sounds they hear, like "ma,” “da,” “ah,” “oh" and even "no!"
• Physical Development: Most babies can roll over by 6 months, which means you need to be very careful to keep hold of them on the change table or bed. Your baby may also be able to sit with support, and some babies can sit unsupported somewhere around 6½ months. Babies can also roll from their back to their stomach and vice versa, and some can propel themselves around the floor using this rolling method. Or, they may creep forward or backward -- sliding around on their tummies while pushing against the floor. You may notice your baby rise up on hands and knees and rock back and forth.
• Cognitive Development: Playing on the floor or play mat with your baby every day helps them to develop their cognitive skills. You can put toys just out of reach and encourage them to roll over to reach the toys. You can also hold your baby up while they sit and let them look around and give them toys to look at while they learn to balance themselves. Introduce your baby to different sounds and voices, and see which sounds they prefer.
• Feeding: Six months is the recommended age to introduce solid food. This is important to give them the nutrients they need, including iron, but also to strengthen their immune system.

Remember that each baby is unique, and they may develop at their own pace. If you have any concerns about your babys development, you should talk to your pediatrician.