The journey continues. Max, Rocky, and Gizmo slowly flout down the river. Soon they come to a moored riverboat.
This is a great squeal. I like all the different zoo animals that are introduces and all the action handle nicely. About mid way through the book they discover why the humans left. It not a clear idea why. Instead your not waiting a whole nether book to find out. Keeping the story engaging.
Boss dying at the end repeated what happen in the first. Hopefully it not going repeat in the next book. Madam dying was heartbreaking. I like Boss but, that should be it. It will be ruined a toughing moment.

This is one the best squeals.

Note I going to rate the whole series in one review on my blog.

15/20 = 5 *stars* ( )