Bones
Name: Bones
Breed: Golden Retreiver
Owner: Unknown
Episode: 5.16 Dark Side of the Moon
HISTORY
Bones is a Golden Retriever Sam befriended when he was young. Sam ran away while Dean was looking after him in Flagstaff (John was on a hunt). He spent two weeks on his own, living on Funyuns and Mr. Pibb.
EPISODES
5.16 Dark Side of the Moon
Sam and Dean are shot, die and end up in Heaven. There they visit memories from their past, including the time Sam ran away and spent time on his own, with Bones - a happy memory for Sam, but not for Dean.