Kate Perry's book signing at the PetCo Union Square (860 Broadway) was rescheduled due to Hurricane Sandy to November 17, 2012. That's right, tomorrow. Same time and place and it will still be teamed with the great Rock and Rawhide gang. Food, music, Ruffikins Muffins, who could ask for anything more? Oh yes, a signed copy of the book, "Training for Both Ends of the Leash".