Head-body 57-70 cm; tail 35-40 cm.
An amphibious carnivore with elongated, sinuous and lithe body, short
limbs, and a long tail. Its coat light brownish-grey to dusky brown; lighter
on the underside, except the buff to cream chest. Tail thick at the base,
tapering to a point; with flattened underside. Feet well-webbed, equipped
with strong claws. There are numerous stiff whiskers around the snout
and in tufts on the elbows.