This guy should marry the woman with nine kids to create the world's largest family!
Well they never implied it is with 1 woman, for all we know it's 12 separate women
no dude! I got really stunned!!! but she couldn't even remember their names!!! --shocking!!!
So "He has a dozen kids" is incorrect because doze isn't an exact translation for dozen, despite 12 and a dozen being the same thing?
But dozen also means an indefinite, large number (dozens of errands to run).
In this case dozen would not be understood as indefinite in English. It would mean twelve as in a dozen eggs.