In spite of the unpleasant consequences with which lycanthropy seems to be connected there is little doubt that transformation used to be regarded as a useful and sometimes even profitable relaxation. Those who were already initiated into its mysteries were generally willing to help others to obtain proficiency, and a draught from the hand of an expert was considered enough to produce the desired condition in the novice.
Predestination to become a wer-animal is thought to be distinguished by some peculiarity in the appearance, such as the meeting of the eyebrows, and the tendency to transform is believed to wax and wane with the seasons and to be subject to the influence of the moon.
The head, claws, and hairy skin of a wer-wolf are like those of a real wolf, but the great test of identity lies in his lack of tail, and in his clothes, which are sure to be found not far from the scene of slaughter.
When doubt is felt whether a wer-wolf is a human being or a real wolf, steel or iron is thrown at the animal under suspicion. When this is done to a genuine wer-wolf the skin is said to split crosswise on the forehead and the naked man comes out through the opening. Sometimes the wer-wolf is frozen with the cold and then he is invulnerable to ordinary weapons. The only way to wound him is to shoot at him with balls of elder pith or bullets of inherited silver.
When the victim is attacked by a human animal the injured person's clothes are stripped from his body. The genuine animal tears them in shreds. If the wer-animal has been transformed by means of a strap of human skin, his tail is then certain to be truncated.
In the following Hessian folk-story, which concerns a poverty-stricken married couple, a large ring was used to bring about the metamorphosis.
The wife always contrived to have meat for every meal and the husband never knew how she managed it. After much questioning she agreed to tell him, and taking him to a field where sheep were grazing she threw a ring over herself and became a wer-wolf. She seized one sheep and was running off with it when the man, who had promised not to call her by name during the performance, cried out, "Oh, Margaret!" and as he did so the wolf disappeared and the woman stood there with no clothes on.
A very similar story is told of a nobleman who fell short of food while traversing a wide tract of country in Russia with a party of friends. He transformed himself into a wolf and caught several sheep, which provided an excellent meal for the travellers.
In India a story is current that there was once a man who was able to change himself into a tiger, but who found it very difficult to resume his normal shape. When he wished to become human again, it was necessary for a particular friend of his to cite a certain formula. The friend died and as this catastrophe limited the tiger-man's powers he determined to teach the proper formula to his wife.