The forest dragon lived in central and southeast asia and dwelled in dense forests, especially bamboo forests. It hunted wild pig, deer, and other native prey. It could alter the flow of gas from its flight bladders to alter its call and mimic prey. Like other dragons it was a solitary and unsociable animal preferring to live alone, except when looking for a mate. It was capable of moving with absolute stealth through the forest, despite its very large size and was the basis behind Chinese and Japanese Dragons. It was also capable of swimming which it could use to escape forest fires or other dangers. And due to its ability to swim some descendants of these forest dragons expanded beyond the thicket to forage in open country, evolving into the magnificent Chinese dragon, D. sinensis, and a subpopulation of D. sinensis, isolated in the Japanese archipelago, the Japanese dragon, D. japonicas (Animal Planet Dragon's Word website).
This dragon's wings were vestigial which meant that it could not fly, but it could glide using its wings and the flight bladders. This ability could be used to allow it to cross wide gaps swiftly. They were however capable of prodigious leaps.