Taigheirm is the magical sacrifice of cats to the infernal spirits once practiced in Scotland. It began as a sacrificial ceremony to the subterranean gods and became a spiritual invocation under Christian influence. The ceremony can only be performed with black cats and they were roasted slowly on a spit. Each time one poor cat died, it would be replaced, and this continued for four days and four nights. Demons were said to appear in the form of black cats after a time and the exorcist would usually request the gift of second sight.
The final Taigheirm was believed to have taken place in Mull around the mid seventeenth century and both exorcists were said to have been given the second sight.