easy, vine snakes, there are the Mexican/south american variety (oxybelis sp.) and also the Asian variety (Ahaetulla sp.) These snakes are so well adapted for climbing its rare for them to ever touch the ground. You can hold one by the tip of the tail and they can lift their entir body up. They are also adapted for speed through brush, they will hold their tongue out and use it as a sight to navigate the small branches at speed. Though the Asian and American variety are not related, the share similar adaptations and are almost identical, text book convergent evolution.