While Din Din loved her new home, she still wasn't very fond of anyone who happened to pass through it. Her mom used to foster all different kinds of animals - from cats and dogs to ferrets and snakes - and Din Din actively disliked every single one of them.
Her mom didn't think there would ever be anyone else that Din Din liked - until they met Joanna.
Joanna is a bearded dragon who wasn't being cared for properly in her previous home so she became aggressive and lost trust in people. She would lunge at other animals, and didn't really seem to get along with anyone.