The funny thing is that the ammount of yukkuri types could be enough to start a respectable and wide collection like Pokemon.
Of course if you are nitpicky and you want all your Yu's being nice, you may end up finding yourself capturing one, seeing if it's good or disposing of it if it turns out to be a trash in disguise in a daily basis. Unlike pokemon that all pokes are nice by default after capturing them, unless you power evolve them while lacking the badges to keep them from going rebel.
Despite how stupid the average yukkuri is, paste Brain yukkuris are barely surviving thanks to their immense luck and extreme sexual appetite
splatYufun! I understand noze~!Yuyu! The cute little ones are being born! Gotta catch 'em all!Yubeh-!Taking off mister hat!Uneasy yukkuri without an accessory shall be punished!Yuyu~ Cute babies be born easy!