The book illustrates the results from the field survey regarding Black-breasted leaf turtle (Geoemyda spengleri) and noted some information on co-occurrence chelonian species in Tay Yen Tu Nature reserve, Vietnam. Mainly, the book presented the G. spengleri information on species population status, distribution, ecology, and threats. The authors also introduce the standard interview and field survey method to collect the needed information on species ecology, threats and population status in order to give conservation recommendations to the management authority. The book also briefly introduce the information on chelonian research and conservation within Vietnam.