Language is important because we need it to communicate with people. Think like that, you are starving and there isn't anything to eat and there is nobody who knows your language. How can you tell your problem?
In this book, I learned about the languages around the world. And some of them were so interesting because I haven't heard them before. For example, Quechua, I haven't heard it before. And Zulu was interesting, too. Because it sounds like a cartoon character name, but there are 10 million people speaking this language. So, I got surprised. Also, the Turkish part was funny to read. Because it is enjoyable to read your language in a foreign language book.
If we come to animal communication part in the book it was evocatory to learn how the dogs speak with each other. In animal communication part, the funniest part was about the bee. Because they use "waggle dance" to report a new flower that they discovered. In my opinion, it was enjoyable to read the part of Caribbean reef squid. Actually, I heard its name for the first time. And they can change their skin colours like chameleons. But they use it for sending messages to each other. Also, they can give different messages at the same time by making their different parts of skins different colour. So, animals have interesting abilities for communicating.