Just wait until they've swarmed you for the first time. Surprisingly, the sixteen are somewhat more manageable in their way than when they were only eight; the larger number and family relations involved have made them somewhat more self-regulating.

[As opposed to when he was stuck babysitting six newborn Eevees all on his own, because good lord that was a nightmare.]

Being a breeder does have its certain advantages, though. Like, for example, access to a number of interesting creatures that I can then supply to help augment a partner's team?