Otter
Otter (subfamily Lutrinae), any of 13 species of semiaquatic mammals, noted for their playful behaviour, that belong to the weasel
family. The lithe and slender body has short legs, a strong neck, and a
long flattened tail that helps propel the animal gracefully through
water. Swimming ability is further enhanced in most species by four
webbed feet. Two species are marine, with the others living
predominantly in fresh water. Most river otters are opportunistic, feeding on whatever is most easily
obtained. Diet often varies seasonally or locally, depending on which
prey is available. River otters hunt visually while chasing fish, but
they use their to dislodge crabs and crayfish from under rocks. Sensory hairs on the
snout called vibrissae also assist by sensing water turbulence.
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