Are you talking the sound that they babble or the actual word dada that they start to say when they are older when actually referring to a certain person?
Because none of my kids said the word dada first. #1 said kiki (kitty), #2 said ball, #3 and #4 said mama and #5 hasn't said a first word yet but he's been babbling dada, mama and baba for awhile now but they don't mean anything particular. They are just easy sounds that babies make (he'll be 1 next week). From the way he's going mama will be his first word, too.
at 5:12 PM on Jul. 8, 2011