Click here - for a list of reptiles & amphibians found in the Park        - this has been prepared by staff and academic visitors. The Crocodile lake, in the northern part of the Nam Cat Tien segment, is a breeding area for a number of siamese crocodiles that were reintroduced in 2000. Other reptiles include the monitor lizard and a wide range of Asian snakes. Viet Nam fauna pictures - click here. Two unidentified lizards This frog is the producer of the "quacking" sound heard from marshy areas in the evening.