In the forefeet of pigs is a very small hole, which may be seen when the hair has been carefully removed. The
is that the legion of devils entered by these apertures. There are also round it some six rings, the whole
larger than a small spangle; they look as if burnt or branded into the skin, and traditionally they are the
marks of the
devil's claws when he entered the swine.
— Frederick Cameron Sillar and Ruth Mary Meyler, The Symbolic Pig:
Anthology of Pigs in Literature and Art
(Oliver and Boyd Ltd., 1961)