Martha Stewart's dog Ghenghis Khan was killed in a gas explosion on Friday at the Pazzazz Pet Boarding kennel in the Pocono Mountains. As the kennel received a propane delivery, the tank ignited and set the pens on fire. The truck driver was critically burned. Fifteen dogs died in the explosion and two died over the weekend. Stewart was "deeply saddened" by the death of her pet and said her "heart goes out" to the kennel owner.