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
Neotropical pygmy squirrel through the trees, and are highly excitable, giving an alarm call described as similar to the sound of a cricket. They give birth to one or two young at a time, with pregnant females having been observed in June. Neotropical pygmy squirrel The Neotropical pygmy squirrel ("Sciurillus pusillus") is a South American species of tree squirrel, being the only living species in the genus Sciurillus and the subfamily Sciurillinae. Genetic analysis has shown it to be the sister group to all other squirrels. The Neotropical pygmy squirrel is the smallest species of tree squirrel native to the Americas, measuring on