I just noticed the ability to send a minion to the minion zoo. Is this your own personal zoo? How do you get to the zoo? I sent one to it and can't find a link to it through my profile or the personal tab.

It's not a zoo actually but more like a battle arena thing for minions. It has been in beta testing a while ago but it seems as if it has been abandoned by staff since then.

it is your own personal zoo, and it is seen by GA users since it's beta. It is not navigable via map or menu. You can get to yours from GA Forums - Beta Testing - Minion Collections/Battling - first post has a link in it. There doesn't seem to be a place in the URL for your userid or your username, so as it stands it is not something someone else can see unless you make a screenshot and host the image somewhere.

There is a battling system there, but nothing says you have to fight. There was talk about using this new Minion battling system for site events instead of the pet system in the Battle Coloseum because that one is much more complicated, non-intuitive, expensive and requires training times. We didn't see the new system for this summer's Faded Memories event.