4K Vulnerable species Black Marsh Turtle, Siebenrockiella Crassicollis

terrapin herpetology turtle crassicollis shell chelonia wildlife species plastron kaeng endangered tortoise animal habitat freshwater reptile ectotherm environment black siebenrockiella vulnerable marsh thailand asia ground testudines nature wilderness hingeless wild krachan cold blooded outdoors national southeast natural wet sacred wood stretch forest smiling siamese park retract medicine chinese traditional temple