Gloria: Found any water yet?
Moto Moto: No, just more diamonds and gold.
Mason: Work will not continue until we discuss our terms with management. Fist up, maternity leave.
Skipper: Maternity leave? You're all male!
Private: In case of a loss of oxygen, please place your masks over your faces to hide your terrified expressions from the other passengers.
Chosen answer: There's two reasons. Firstly, infants are only allowed to work for short periods of time, hence why when you see babies onscreen that are heavily featured, invariably twins are used to alternate to not fall foul of the rules. Secondly, it may be that one of the voices didn't give the filmakers as much diverse dialogue as they needed so they brought in another actor to get the rest they needed.
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