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
Pygmy cormorant number of individuals which put the species on the International Union for Conservation of Nature (IUCN) Red List as a vulnerable species. It is also hunted in leisure activities, and in Iran the pygmy cormorant is commercialized for cooking. This species is distinguished from the great cormorant and the common shag by its much smaller size, lighter build, and long tail. It feeds mainly on fish, often hunting in groups, and perches in trees between fishing expeditions. The pygmy cormorant is one of the species to which the "Agreement on the Conservation of African-Eurasian Migratory Waterbirds" (AEWA) applies. Pygmy cormorant