Reed Jeppson went out to feed his dogs... and was never seen again

In 1964, 15 year old Reed Jeppson got back from a morning at church and went out to feed his beloved dogs in their backyard kennel whilst his sister prepped lunch for the family. She warned him not to take too long, that food would be ready soon... but he never came back. Both Reed and both of his dogs seemingly disappeared off the face of the earth, with no clue as to their whereabouts.