I found this book so engaging, I could hardly put it down. There is some serious language and sexual content, so be warned about that. Nonetheless, I thought the story was so interesting and the characters so well developed. The book is told from the eyes of a man (both at the time the events occured and later when the same man is in his nineties and in a nursing home) who worked as a zoo vet. Set in the time of the end of the Great Depression, it brings in much of the perspective of that era, as well. I actually listened to this as a book on tape and would highly recommend it. They had two different men reading...one representing Jacob as a young man and one who read the old man part. The gentleman who read as the old man was fabulous and made the story come all the more alive for me. The younger man did a wonderful job with going between different accents of the characters. A very well done book on tape! Some great messages on relationships with animals and on aging.