Command to Spawn Tamed: Cheat GMSummon "BoneDragon_Character_BP_C" 150
Add to Spawners (Game.ini): ConfigAddNPCSpawnEntriesContainer=(NPCSpawnEntriesContainerClassString="DinoSpawnEntriesBeach_C",NPCSpawnEntries=((AnEntryName="BoneDragon",EntryWeight=0.1,NPCsToSpawn=("/BoneDragon/BoneDragon_Character_BP.BoneDragon_Character_BP_C"))),NPCSpawnLimits=((NPCClass="/BoneDragon/BoneDragon_Character_BP.BoneDragon_Character_BP_C",MaxPercentageOfDesiredNumToAllow=0.1)))