Volunteers rescued a dog, which, despite the paralysis, he continued to wag his tail. People believe that when a dog wags its tail, it shows their owners that are happy.
But wagging its tail, there are other, more important features: each dog has its own unique flavor, and the tail helps spread the smell. This dog was all alone, scared, sick. But she found the strength to wag his tail. Wagging tails and thus spreading their scent, dogs want to smell them noticed — for example, dogs may behave at the sight of a friendly person or if you want to play.
However, the dog can wag the tail, not only when excited or happy, the dog is also a way of communicating with others.