In many ways, this is a very sweet story. I am an animal lover, and am a sucker for animal tales. I loved reading about the characters interacting not only with Friday, but also with other animals in their lives. The bond between man and beast is quite special, and in my opinion beautiful. The characters, for the most part, are warm and likable, even the ones who are a bit "off".
But do not let this book fool you. The critter aspect is sweet, but it also does a great job highlighting the big business of zoos and animal parks, as well as the dirty business that can occur behind the scenes in animal activism. This is not a fluff piece by any means; on the contrary I think this book very accurately portrays the difficult position zoo keepers and animal handlers are in. All in all, this is a great read, not too heavy, but solid.