A sheep is sometimes, but not frequently, chosen as a medium for transformation.
A man who was returning late from the market at Verrières in Poitou, met a lamb, which followed him bleating loudly, at the turn of a footpath crossing a lonely heath. "Poor thing," he said, "you might be devoured by a wolf," and, seizing the lamb by its four legs, he hoisted it on to his shoulders, so as to carry it conveniently. As he approached his house he found the animal began to weigh very heavily. At last he arrived in a perspiration and put down his burden amongst the sheep which had already been penned in the fold. At dawn the next day, he went to look at his new lamb. But in the spot where he had placed it the evening before he found a huge demon, busy stitching straw soles into his shoes. The sorcerer had resumed human shape and, looking very foolish, begged that he would say nothing about his little adventure. But the man seized him by the shoulders, kicked him from behind and chucked him out of the pen, crying, "Get out of this, you evil being." "If only he had made the slightest scratch from which the blood flowed," added the old lady who was telling the story, "the sorcerer would have been cured, and would no longer have been able to transform himself into an animal."
Although witches are able to transform themselves into horses if they wish, they usually prefer to use their powers for transforming other people, and getting the benefit by riding their victims to death.
Margaret Grant, a Scottish witch of the nineteenth century, believed that she was able to transform herself into various animals, and "avers that she was, at times, actually changed by evil-disposed persons into a pony or a hare and ridden for great distances, or hunted by dogs as the case might be."
Joseph Glanvill in his "Sadducismus Triumphatus," tells the story of a "great army of witches" who were charged with performing a feat of horse-transformation on a large scale at Blocula in Sweden in 1669.
A man may be transformed by a woman throwing a magic halter over his head while he is in bed. Then she mounts the horse, and rides to the witches' tryst. If, however, the man-horse can manage to slip the magic bridle off and throw it over her, she becomes a mare, and her victim mounts her and rides till she is exhausted.
At Yarrowfoot a witch-mare, according to one story, was shod in the usual manner and afterwards sold to her own husband. To his surprise, when he removed the bridle, his wife stood before him in human form, wearing horseshoes on her hands and feet.
There are many variants of this story, another woman having been found in bed with horseshoe attachments, and it is difficult to trace the origin of this fantastic idea.
In the neighbourhood of Ostrel in Denmark a man served on a farm, the mistress of which, unknown to him, was a witch. Although she gave him good and wholesome food he never thrived, but became thinner every day. At this, being much troubled, he went to a wise man, to whom he communicated his case. From this man he learnt that his mistress was a witch and that at night, while he slept, she transformed him into a horse, and rode upon him to Troms Church in Norway; so that it was not to be wondered at that his strength decreased. The wise man at the same time gave him an ointment with which to rub his head at night, and said when he fell asleep he would have a violent itching on his head, and then he would wake up and see that he was standing outside Troms Church.
The man did as he had been told, and on waking up the following night, he found that he was standing by the church, holding in his hand a bridle which he had torn off whilst scratching his head. Behind him he saw many horses bound together by each other's tails. Presently his mistress came out and cast a friendly look at him, but he nodded for her to come nearer, and when she stood by, he cast the bridle over her head and she became a handsome mare on the spot. He mounted and rode her home. On the way he called at a farrier's, and made him shoe the mare. When he reached home he told his master that he had been out to buy a fine mare, which would go handsomely in harness with one already in the stables. The master paid him a good round sum for the animal, but when he took off its bridle, there stood his wife with horseshoes on her hands and feet. He turned her straight out of doors, but she never managed to get rid of the horseshoes.