Fauna
Mammal

Giant Ottershrew

Potamogale velox

Also known as Giant Otter Shrew, Giant African Otter Shrew

Propelled by a remarkably muscular, laterally compressed tail, the giant ottershrew weaves through equatorial streams with fish-like undulations rather than using webbed feet. Nocturnal and strictly solitary, it patrols murky streambeds using hyper-sensitive facial vibrissae to detect vibrations from aquatic prey before dragging catches ashore to eat. Though morphologically convergent with true otters, its closest evolutionary affinities lie across the Mozambique Channel with the diverse tenrecs of Madagascar.

SemiaquaticNocturnalCarnivorous
Giant Ottershrew reference1 / 2
(c) Julien Renoult, some rights reserved (CC BY), uploaded by Julien Renoult · cc-by
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Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & preyFreshwater Crabs, Catfish, Aquatic Beetles
Predators
  • African Fish Eagle
  • Slender-snouted Crocodile
  • Water Cobra
ThreatsHabitat loss from deforestation, water siltation from agriculture, and accidental drowning in fish traps
HabitatsDense lowland rainforest streams, clear mountain torrents, and forest wetlands
Life spanApproximately 4–6 years
Classification
  1. FamilyTenrecidae
  2. SpeciesPotamogale velox
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Capable of delivering a sharp defensive bite if cornered; observe quietly from riverbanks.
Why it is dangerous
Possesses sharp, needle-like dentition adapted for crushing tough crab carapaces, capable of inflicting deep puncture wounds.
How to recognize a risky encounter
Distinguished by dark velvety brown fur, white underparts, long sensory whiskers, and a distinctive vertically flattened tail.
What to do
Never attempt to catch or handle an animal found near water or trapped in fishing gear; allow it an open retreat path.
Responsible observation
  • Night Spotting: Look for reflective eye-shine along quiet forest pools using a red-beam flashlight after dusk.
  • Listen for Splashes: Listen for sudden, sharp splashing near stream banks, which signals an active crab hunt.
  • Stream Etiquette: Keep a respectful distance from natural bank burrows to prevent collapsing fragile shoreline tunnels.
Related species
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