(Olympia, WA)  --  Thurston County, Washington, authorities say a three-year-old boy who was attacked by his family's wolf-dog hybrid is being hospitalized.  Sheriff's deputies say the boy suffered severe injuries to his hand and forearm after he stuck his hand into the kennel containing two wolf-dog hybrids and was attacked by at least one.  Both animals have been secured by Animal Services pending further investigation.  The boy is being treated at Harborview Medical Center in Seattle.