It’s a ruff story.  A New York couple is being accused of dognapping nine premier pooches — by a Westchester shelter owner — who herself is at the center of multiple complaints from previous clients. The two parties are currently locked in a vicious dogfight over eight adorable boxer-shepherd puppies and their mom.  Kris Fuhr, who works in tech, and Sara Obstarczyk, a former pilates instructor, are suing Lisa Smith, 53, president and owner of A Good Dog Rescue, Inc., a Westchester-based