What happens to the dog after he sees Odysseus?

After seeing Odysseus, the faithful dog Argos recognizes his master despite being old and neglected. Overcome with joy and relief, Argos finally succumbs to death, having waited for Odysseus's return for twenty years. His passing symbolizes loyalty and the passage of time, highlighting the contrast between the dog's unwavering devotion and the disloyalty of the suitors in Odysseus's home.