I would definitely recommend it, especially if you have a dog yourself. Or if you encounter a lot of dogs. It is always better to know what they want to say, misunderstanding the dog language can cause many problems. It can create problem behavior in the dog if we do not understand the dog, but it can also lead to depressed dogs and people, and even to biting incidents. The dog is then blamed for this and 'presented with the bill', while it was caused by the human not understanding what the dog had been saying through his communication for a long time. A dog communicates all day, but he communicates differently than we do. He can't communicate in our language, they can learn but they can't learn to communicate in our language. Since we choose to live with them, it is up to us to learn how they communicate so that we can truly understand each other.