Someone pointed out that 21mo DD2 doesn't have a sense of humour and laugh at jokes the way DD1 used to and now I'm worried!
'Cow goes baa' and other jokes she just stares or is confused but I've read they're supposed to know this is wrong and funny at this age.
Her speech is on track and she does smile and laugh at things ie being chased by DD1, seeing animals, being tickled. Just doesn't get humour.
Normal or not??