All of the other collections only have one each. It'd be nice, especially since they count as a "collection" item as far as the quick stock is concerned, if the minion zoo only held one of each minion as well. It's really frustrating having to go all the way through it, taking one out at a time. Especially since a lot of food items are also minions, so if you go restocking or are doing quests, and send items to your collection real quick, then you've got to go into your minion zoo and take back all those minions that were already in there. :( I found 27 of a particular one in there once, an item I didn't even know was a minion. I couldn't figure out where they were all going.