Regardless of whether it's styled into a poodle pompom or a charming curled shape, a dog's tail serves a practical purpose beyond mere decoration.
From a biological perspective, dogs rely on their tails for balance and, in certain instances, for insulation.
(You may have observed a sleeping dog with its tail tucked under its nose; it's a common resting position).
A dog's tail can convey a wide range of emotions, from joy and dominance to curiosity and hostility.
The curve of a tail goes deeper than the surface. A dog's tail curl is controlled by the bones inside it.
The bones in a tail are actually vertebrae since they are an extension of the spine.
A curved or bent tail may be the result of abnormal development of the vertebrae in the tail of certain dog breeds.