This is weird. See this picture? I have used it a couple of times to illustrate the theme of "witch" when posting about Nemeta, the daughter of the title character of Poul and Karen Anderson's King of Ys tetralogy. When I look at the picture, I see to the woman's right a horse's head and face with the mouth in the cauldron, the eyes parallel to her neck and the ears parallel to the top of her head.
There is no such animal. Its head is smoke from the cauldron and light reflected in the smoke. One of its eyes is her shoulder and the other is the bottom of a tower protruding from the castle. One ear is the top of a tower and the other is a tree. When attention is focused on the left hand side of the picture, there is no horse but it is still there now in the corner of my eye.