I personally love this book and I'm an adult. It's a cute story about what other animals do, but not the hippo who doesn't seem to be allowed to do anything except at the end she does do something. She kills all the other animals because they were mean to her.
No, no, she doesn't. I'm joking.
The story is very amusing. My daughter loved this book when she was younger. Boynton's books aren't very babyish. She uses words like "cavort" "bog" which you typically don't see in toddler and preschool books and I like that. It's good for expanding a child's vocabulary.