The article focuses on a study that evaluates the hematology and serum biochemistry of Dicerorhinus sumatrensis that are housed at the Sumatran Rhino Sanctuary in Way Kambas National Park located in Lampung, Indonesia. It states that hematological and serum analysis helps in monitoring the health of endangered Sumatran rhinoceroses. The study reveals difference in the content of serum urea, aspartate aminotransferase (AST) and lactate dehydrogenase in young and old rhinoceros whereas difference in the content of AST, alanine aminotransferase and glucose was reported between male and female rhinoceroses.