Bearded dragons : an ambient mob that also serves a purpose.

Bearded dragons would be passive mobs that would spawn in desert , badlands and savanna biomes. They would be tamed using dandelion because dandelion greens are a common food source for captive bearded dragons. They would attack all arthropod mobs except bees and fireflies ( because one firefly is poisonous enough to kill a full grown bearded dragon) . They would also turn black and hiss when hostile mobs are near similar to what wild bearded dragons do to scare predators.