Overview
The Round-eared Sengi (Macroscelides proboscideus), historically referred to as the round-eared elephant shrew, is an adorable, high-velocity miniature mammal native to the stony gravel plains and arid scrub of southern Africa. Despite superficially resembling a rodent with an elongated nose, this diminutive creature belongs to the ancient superorder Afrotheria—meaning it is genetically more closely related to elephants, manatees, and aardvarks than to true shrews or mice.
Biology and Physical Characteristics
Weighing barely forty grams, Macroscelides proboscideus is covered in plush, silky fur of warm sandy-brown to pale buff, blending seamlessly into desert rocks. Its most prominent features include large, rounded ears, dark ringed eyes conferring keen vision, and an extraordinarily mobile, tapering proboscis-like nose used to sniff out buried insects. Its elongated, kangaroo-like hind legs provide remarkable spring and agility, propelling it at speeds up to twenty-eight kilometers per hour relative to its size.
Behavior and Ecology
Monogamous and fiercely territorial, pairs of round-eared sengis maintain complex networks of meticulously cleaned trails through the gravel and desert scrub. They spend significant time sweeping pebbles and twigs from these micro-highways using their forepaws, creating unobstructed speedways that allow them to sprint at breathtaking velocity back to protective rock crevices when hunted by birds of prey, snakes, or jackals. Active primarily during dawn and dusk, they enter shallow daily torpor during freezing desert nights to conserve metabolic energy.
Conservation and Human Impact
Evaluated as Least Concern by the IUCN, Macroscelides proboscideus is widespread and common across vast swathes of the Karoo and Namib biomes. Because it inhabits rugged, arid terrain with minimal agricultural or urban value, it faces negligible threats from habitat fragmentation. Healthy populations are protected in large national parks, including Karoo National Park and Tankwa Karoo National Park in South Africa.
Interesting Factoid
The Round-eared Sengi builds and meticulously sweeps its own private obstacle-free racetracks through desert gravel, allowing it to sprint at over seventeen miles per hour to outrun hawks and jackals.
Last updated: October 2026