In Celtic mythology, the creature often linked with the sun and associated with healing is the Hound of Ulster, specifically the character Cu Chulainn. This mythical hound represents valor and loyalty and is closely tied to heroes in Celtic tales. The hound symbolizes the connection between warriors and the divine, embodying the qualities that lead to healing and life's renewal. This interrelation with the sun emphasizes the importance of light and warmth in the mythological narratives.