Galeopterus variegatus, also named Sunda Colugo or the Sunda Flying Lemur, is a nocturnal and arboreal (lives in trees) mammal endemic to Indochina and Sundaland. These animals possess large membranes of skin called patagiums that extend along the limbs, allowing them to glide along distances of up to around 100 meters; given that these animals are only around 40 centimeters in length that's pretty impressive skills! The mottled coloring of these animals also makes them look a bit like the lichen of a tree and therefore helps to camouflage them.
Intrigued by the incredible—and often inexplicable—forms of life on our Earth, science writer Mara Grunbaum began showcasing her favorite examples on Tumblr. Now you can marvel at more than 100 of Evolution’s greatest hits and misses in her new book WTF, Evolution?!: A Theory of Unintelligible Design (Workman). Take a break from these strange creatures and check out the most adorable photos of the sweetest animals.