By twelve months your child should be able to do most of the following:
Sit without support
Crawl on all fours
Pull to stand
Understand the meaning of "no", "bye bye", and simple requests
Repeat speech sounds (ba-ba, ga-ga)
Communicate needs with motions and sounds
Prefer people he knows and shy around others
Feed self finger foods
Begin using spoon in feeding
Drink from cup with help