Giant Asian Wood Turtle (Heosemys grandis)We have RARE Giant Asian Wood Turtles for sale at American Reptile Distributors! These terrestrial turtles are immensely unique and are sure to brighten up a an avid reptile hobbyists collection. The shell of the giant Asian pond turtle has a brown to black coloration with a sharp ridge along the center while the plastron is yellow in color. Species: Heosemys grandis Origin: Captive Bred Size: Approximately 3 4 inches. Adults reaching up to 17 inches.