What was the name of the dog that survived the crash?

The dog that survived the crash of Oceanic Flight 815 was named Vincent. Vincent is a yellow Labrador retriever belonging to Walt Lloyd, the young son of survivor Michael Dawson.

Vincent appears almost immediately in Lost, encountering Jack in the jungle after the crash. His presence gives the survivors a living connection to the world they left behind, while his movements often mirror the show's emotional and mysterious atmosphere. Locke eventually finds Vincent after Walt loses track of him and returns him to Michael, but Vincent remains on the island after Michael and Walt depart.

Vincent is played by two Labrador retrievers, Madison and Pono. He is more than a mascot: he accompanies or comforts several survivors, including Sun, Rose, and Bernard. In the series finale, Vincent lies beside Jack during the character's final moments, deliberately echoing the opening episode. Rex, Max, and Buddy are plausible generic dog names, but none is the canon name of Lost's crash-surviving dog.