I spent two hours searching all around the world for these guys just so I can make one Toad Leather for the LTW quest... and then their names when I finally found
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Final Fantasy XIV A Realm Reborn - Great Gigantoad Skin & Raptor Skin Farming Spot - YouTube
Trade Final Fantasy XIV Items | Traderie
Farming] Final Fantasy XIV - Gigantoad Skin (Location 2) - YouTube
Eorzea Database: Gigantoad Skin | FINAL FANTASY XIV, The Lodestone