The short story that follows the ones about Mowgli is called The White Seal. It was the fact that as a story it had no relevance to the previous three stories that alerted me to the fact that I wasn't reading a novel. As such I spent the entirety of the story inwardly grumbling about the randomness of the book that I had picked up and how I was sure I wasn't going to like the rest of it. Which is a disappointing response because in hindsight I think that it was rather a good story, but I missed it because I was in too much shock to notice.
Worth a second read I think.