Galago , , common name for any of several small African primates of the loris family, sometimes called bush babies. Galagos are nocturnal and arboreal in habit, eating fruit, insects, and tree gums. They build nests in trees. The largest species, found on the east coast of Africa, measures 27 to 46 cm (11 to 18 in), exclusive of the tail. The smallest species, Demidoff's galago, measures only 10 to 16 cm (4 to 6 in). Their tails are longer than their bodies; their hind legs are longer and stronger than their forelegs, with elongated ankle bones. Their strong digits, well adapted for grasping branches, are all nail-bearing except the second on the hind foot, which is clawed. Galagos are covered with a soft, fawn-gray or brown, woolly fur. They are distinguished from other primates by their dentition (dental features). They fold their large, hairless, thin ears lengthwise close to the head when at rest and while leaping through trees. The head is small and round like that of a cat. The immense eyes are a rich brown color, translucent, and marked with minute lines, with large, oval pupils contracting in daylight to vertical slits. Galagos usually have one to three young per litter .