(Goble, OR)  --  The Columbia County Sheriff's Office is investigating reports that puppies were being frozen and later used as feed for snakes.  Deputies searched a home in Goble, near St. Helens, last Friday and found 18 dead, frozen puppies.  A snake was also seized by the Oregon Department of Fish and Wildlife.  There were several snakes at the home.  The Oregon Humane Society will determine how the puppies died.  The investigation is ongoing and no charges have been filed.