Hyperion

Hyperion was the adopted son of Uranus and Gaea, a precise, intelligent young wolf who was trained to become a hunter.
As a young wolf, he met Theia, who he at first resented as she often bettered him at hunting. As time went by, however, he instead came to admire her abilities and decided he was better suited to pupsitting.
He and Theia eventually grew closer and became paired, having three pups together: Selene, Eos, and Helios.
Theia passed first, bring Hyperion closer to his children. Awhile after, Hyperion followed, passing in his sleep.