Although constantly hungry and prone to mayhem, a wyvern that can be befriended (usually through a delicate combination of flattery, intimidation, food, and treasure) becomes a powerful ally. They often serve giants and monstrous humanoids as guardians, and some lizardfolk and boggard tribes even use them as mounts, although such arrangements are quite costly in terms of food and gold, for few are the wyverns who would willingly serve as steeds for lesser creatures for long.