At the end of the hunting season in Spain, the galgos deemed worthless or too costly to maintain are destroyed in a variety of inhumane ways  including being hanged, dumped into abandoned wells, shot, and even burned to death.

The plight of the Spanish Galgos\n\n Each year, approximately 60,000 Spanish galgos (hunting dogs) are abandoned or tortured to death in Spain, especially in the communities of Castile and Leon, Extremadura and Andalusia. Galgos are primarily used by hunters (galgueros) to hunt hares.

Sam speculates that his dreams are him seeing God's possible endings due to the link created when he shot God. Though Sam refuses to give up, Dean believes the situation to be bleak.