Cats are mysterious, which fascinates cat lovers but puzzles (and sometimes angers) everyone else. Cats may stare intently at nothing, make mad dashes through the house for no apparent reason or otherwise appear to be responding to some unseen phenomenon.
The fact is, a cat is not responding to “nothing,” but to something he can see, hear or smell, something that our human senses are not attuned to. No extrasensory perception (ESP) is involved, merely more-sensitive-than-human perception, which also figures into cats’ mysterious sensing of earthquakes coming.
In a prescientific age, a lot of people tended to assume that an animal with such mysterious behavior and powers was in cahoots with Satan and the powers of evil.