15 month old
Most babies will be walking alone at this point. They will be starting to learn how to remove their clothes. Scared or shy of strangers. Their vocabulary will be much more around 5-10 single words. They can follow simple commands. Point to body parts. Start crawling up the stairs. Make sure your baby is off the bottle and the pacifier by this age. Make sure baby is safe around water. Adult supervision is the utmost importance at this age. Remember their heads are bigger than their bodies and they are definitely top heavy. When they fall the head falls first and it will be harder for them to pick it up.