They are rare spawns in swamp biome on lost island and the island. You have to find 2 to tame one, and you might just end up killing it because the taming process is like a reaper, you must make its health below 100, and then it will lay eggs in your dino, if it has eaten the pheromone. Then it should fly away and you have to take care of the dino with eggs inside it. It will have cravings and you must feed it it’s cravings or the baby will die, and after a while the baby will pop out, partially grown. Then you just raise it from there, like a normal dino baby.