Green. Draconic. Only CR 4. Forest drakes are the affordable woodland menace (and plenty speedy, too).
Forest drakes hate fey. A quickling uses this to his advantage, daring forest drakes to chase him only to lure them into attacking the dwellings of brownies and atomies instead. He relies of his speed and invisibility to stay ahead of their speed surges.
A new ferry starts up to save travelers a seven-mile hike to more fordable waters. Business is booming till a forest drake discovers the ferry. Able to breathe water, he treats the boat like a reliable buffet.
The annual forest drake hunt is a right of passage for young elves. It is also a traditional way for elven princes to remove rivals to the throne. This year the dueling princes, a trio of half-brothers, are especially charismatic and fiery. If one falls, civil war will almost certainly erupt among the followers.
—Pathfinder Bestiary 2107
Another thought for 3.0/3.5 fans: Given the forest drakes’ loathing of elves, the threat of them might be part of the impetus behind the creation of the Monster Manual II’s felldrakes.