The Wikipedia article of the day for October 11, 2017 is Fork-marked lemur.
Fork-marked lemurs (the genus Phaner) are primates native to Madagascar. Weighing around 350 grams (0.77 lb) or more, they are some of the largest members of the family of dwarf and mouse lemurs in the suborder Strepsirrhini. They have a dorsal forked stripe, dark rings around their eyes, and large membranous ears. Like other members of their family, they are nocturnal, and sleep in tree holes and nests during the day. Males are very vocal, making repeated calls at the beginning and end of the night. Monogamous pairing is typical; females are dominant, and are thought to have only one offspring every two years or more. Fork-marked lemurs run quadrupedally across branches in a wide variety of habitats, ranging from dry deciduous forests to rainforests. Their diet consists primarily of tree gum and other exudates, though they may obtain some of their protein by hunting small arthropods later at night. Three of the four species are endangered and the other is listed as vulnerable. Their populations are in decline due to habitat destruction.