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 possum species are able to leap long distances. Conservation International (CI) and the Indonesia Institute of Science (LIPI) reported on the possible discovery of a new species of "Cercartetus" pygmy possum upon visit to the Foja Mountains in June 2007. The two genera of pygmy possums are "Burramys" and "Cercartetus". "Burramys" contains only one extant species, the mountain pygmy possum, "B. parvus". As currently understood, "Cercartetus" consists of four extant species. † = extinct species Pygmy possum The pygmy possums are a family of small possums that together form the marsupial family Burramyidae. The five extant species of pygmy possum are