The Roar by Emma Clayton

For fans of Divergent, The Hunger Games, and Ender’s Game.  How many of you had pets?  Or know someone with pets?  Imagine what you would do if one day all of the animals on Earth went insane and started attacking humans?  Your dog, your cat, your rabbit.  In The Roar, the people pack up and pack in, everyone has to move into the top third of the planet, the only place surrounded by a wall the keeps the animals out and the people in.  Mika and Ellie were part of the first generation born behind the wall.  As twins, they had a deep connection.  So when a policeman came to tell Mika that Ellie is dead, he knows that it’s a lie.  He will do everything to find his sister.  Luckily she is already doing the same.