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Otters probably don't use their ears when looking for prey underwater. © Lee Brun |
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• Thirty-six sharp teeth are used for primarily for gripping and slicing fish, as well as for aggressive behavior. Fairly wide molars can also crush food and bones, making it possible to exploit a wider range of prey. • Brown eyes are located near the front and top of the skull, enabling it to see above water while nearly submerged. • The river otter's ears are small, about two centimeters (3/4 of an inch) long, rounded, and set back on either side of its head. Their hearing is very good, and vital for detecting danger on land. They close their ears underwater, an indication that hearing is not important while hunting.
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