If you are looking for a great read on animal shelters and helping abused animals, I suggest The Mountaintop School for Dogs and other second chances by Ellen Cooney. While it is fictional, it is more realistic than one would suspect. I truly enjoyed this novel. It was very descriptive, and it constantly gave you a sense of what was happening.
A 24 year old girl named Evie leaves her hometown to become a dog trainer helping abused dogs. Meeting the dogs and working with them for the first time helps her learn more about herself and how animal abuse can have a bigger negative impact on animals than she would imagine.
Notes for Parents:
There is a small amount of profanity.
The Mountaintop School for Dogs and Other Second Chances by Ellen Cooney