Quote from : The Cat Inside Book

The white cat symbolizes the silvery moon prying into corners and cleansing the sky for the day to follow. The white cat is "the cleaner" or "the animal that cleans itself," described by the Sanskrit word Margaras, which means "the hunter who follows the track; the investigator; the skip tracer." The white cat is the hunter and the killer, his path lighted by the silvery moon. All dark, hidden places and beings are revealed in that inexorably gentle light. You can't shake your white cat because your white cat is you. You can't hide from your white cat because your white cat hides with you.