Okay I found some blueprints and built one so I'm kinda curious as to how it exactly works.

Is there a way to see the pets you sent there? I know we can't get them back and someone said that information still needed to be stored about them, which makes me think that yes sinc the data about them still exists we can see them.

Is there a limit as to how many pets you can send there each day or any sort of limitation? I wouldn't expect so but it can't hurt to ask.

At this time you are unable to view the pets you have sent there. And, as far as I'm aware, there are no limits.

Erislyn is right.

We're planning to add the ability to view the pets in Reserve in future but it requires some additional coding. If to judge by the suggestions that we received, it was vital to implement ASAP a feature that allows to remove the pets from the game without the possibility for the other players to adopt them.