When a baby aged 11 months

When a baby aged 11 months
Long standing without assistance. Dipegangi run if one or two hands. Changing the stand to be seated position without assistance. Can hold small objects with thumb and telunjuknya. He times in succession, if given a drink through cup. Using both hands together to perform different functions, such as retrieve objects from hand right and the left hand with the body. Fear when who is not known, but will be happy with other children. Understanding more words spoken