What are you talking about, dragons? Some deity or something? Perhaps you mean Boyna, but it's supposed to be ash coloured. Ones in this area are green. Boyna is the god of rain, and so if there are too many, there'll be a big flood. If green ones are what you are after, Santo Domingo has many, so go check there.
Final Step - A large green lizard:
[Santo Domingo: Western outskirts]
Seems there are green-coloured, dragon-like creatures in the outskirts of Santo Domingo. Search the jagged rocks in the north. No apparent special powers, but then they may just be small offspring.
[use Observe, Search, & ecological research. East and north of northern stacked boulders]
Rewards for Completion:
Medium-Sized Creature Green Dragon
Fame Require Total Fame
A large green reptile that lives in the tropics. Some believe it's dragon's larva,
but you'd need to raise them for a long time to prove anything.
Although it has terrifying appearance, it is in fact a herbivore.