As with the first book, this is an excellent must-have for Dungeon Masters to play their creatures in a smarter, more challenging, and more interesting way.
I just have one complaint: Why is the order of the entries 100% random? The creature types (humanoid, ooze, fiend, etc.) are in a completely random order, and then the creatures within those sections are completely random as well! Would it have been that hard to order them in alphabetical order so you don't have to consult the table of contents every single time you need to look up a creature? I guess I can resort to using the index every time, but It's really frustrating that this wasn't just done on the table of contents and the order of the pages themselves.