I am not sure on exact ages etc but DD is just over 11mths and she knows if we say puppy or dogs to look for our dogs, if we ask where are the fish she points at our fish tank and sits infront of it and says ISH ISH.

She has just started playing with the shapes ball and putting the shapes in (with my help) and i try saying SQUARE or CiRCLE etc as she puts them in.. her favourite seems to be a star, can't wait until she can start talking and telling me which is which.. i try colors too especially with the wiggles...