Common Molerat (Cryptomys hottentotus) lives in southern African savanna across Southern Africa. It feeds on roots and tubers. Its conservation status is Least Concern.
Fascinating facts about the Common Molerat
- A common mole-rat tunnel can stretch a full kilometre, weaving through compact soils and occasional sand as the colony searches for underground geophytes. One documented system housed 10 adults and 3 young, showing how extensive these networks become. Such length not only secures food, storage, nesting and waste sites, but also reshapes the soil, improving drainage and turnover for the surrounding ecosystem.
- Colonies of common mole-rats are eusocial, with a strict hierarchy: the largest male and female form the sole breeding pair, while up to 14 individuals act as workers or casual workers. Workers, usually younger and smaller, perform 15-20 % more digging and foraging than the older casual workers, illustrating a division of labour.
- Reproductive timing is tightly linked to the southern-hemisphere summer: mating starts in September-October, gestation lasts about 81 days, and females can give birth to up to five pups per litter, with one or two litters possible each season. Pups leave the nest after just five days and begin eating solid food by ten days.
- Adult common mole-rats weigh between 50 g and 130 g and measure 10.5-16.5 cm in body length with tails only 1.2-3.8 cm long. Their cylindrical shape, short limbs, loose skin and dense fur let them somersault through tight tunnels, while chisel-like incisors and vibrissae aid digging and sensory navigation underground.
- Despite living underground, common mole-rats are endothermic, generating their own heat to keep body temperature above ambient levels. In arid zones they shed body mass, reducing food needs and conserving energy, a physiological tweak that helps them survive in dry savanna and grassland habitats across Southern Africa.
Sources
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At a glance
RangeSouthern Africa
HabitatSouthern African savanna
DietRoots and tubers
About the Common Molerat
In the scorching savannas and grasslands, the common molerat burrows with relentless industry, its stout body undulating as it excavates an intricate network of tunnels and chambers with remarkable speed and agility. With eyes reduced to mere slits, this subterranean specialist navigates its dark realm with ease, its sensitive whiskers and powerful front teeth guiding it through the dense, earthy darkness. As it moves, the molerat's rough, velvety fur ruffles and smooths, a testament to its remarkable adaptability in a world of dusty, crumbling tunnels and hidden dangers.
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