I loved the YA book “The One and Only Ivan”. This is a really nice children‘s story about the same gorilla with such a sad life. Really great illustrations. Despite it being so short and succinct (it‘s a kid‘s book), this one still had me crying a couple of times. There are a few pages at the end with a longer textual summary of Ivan‘s life and a note from one of the zookeeper‘s who took care of him in his last decade of life