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Which otter species is the largest freshwater otter?
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otter
A sea otter (Enhydra lutris) eating a crab.
The largest freshwater otter species is the giant otter (Pteronura brasiliensis), which can reach a weight of 26 kg (57 pounds).1
While the sea otter (Enhydra lutris) is the largest of all otter speciesâweighing up to 45 kg (99 pounds)âit is a marine mammal rather than a freshwater species.12