So when you've filled out the form you'll either get a message saying that your application has been approved or declined. A good idea is to write some stuff about yourself (The sim who's adopting, breeding, etc.) 
The risk of being declined is small, but it does happen...

If we don't have any available studs, broods or pups we can put you on a waitinglist.

So when you've contacted us we hope you'll show patience and give us a week to get back to you.