Exploring Zelda: Tears of the Kingdom's Locations and Challenges.
Dondons are elephant-like beasts found in southern Akkala in The Legend of Zelda: Tears of the Kingdom. They can give you gemstones like diamonds, rubies, and sapphires if you feed them luminous stones. However, you can't ride them. To feed them, place a luminous stone in front of the dondon, wait for it to eat it, leave the area, and come back after 10 minutes to collect your loot.