Pygmy hippopotamus unusual secretion as common hippos, that gives a pinkish tinge to their bodies, and is sometimes described as "blood sweat" though the secretion is neither sweat nor blood. This substance, hipposudoric acid, is believed to have antiseptic and sunscreening properties. The skin of hippos dries out quickly and cracks, which is why both species spend so much time in water. The skeleton of "C. liberiensis" is more gracile than that of the common hippopotamus, meaning their bones are proportionally thinner. The common hippo's spine is parallel with the ground; the pygmy hippo's back slopes forward, a likely adaptation to pass
Protected areas of Vietnam beach where the sea turtle nestle is located on a promontory bordering a marine park with coral reefs; 11 species of turtles, both terrestrial and marine are recorded. Global conservation concerns are serious in view of anthropological pressures in the area particularly for black-shanked douc ("Pygathrix nigripes") highest number in Vietnam, pygmy loris ("Nycticebus pygmaeus"), Asian black bear ("Ursus thibetanus"), sun bear ("U. malayanus"), large-antlered muntjac "Muntiacus vuquangensis" and Siamese fireback ("Lophura diardi"). The total Fauna recorded in the park consist of 72 mammal species and 181 bird species. Bats are also common; "Cynopterus brachyotis" is the endangered species out