Otter Paws

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Sea otters have the densest fur in the animal kingdom—1 million hairs per square inch as opposed to the 150,000 hairs on the entire human head. LEARN MORE:

Sea Otters Are Weird Gross and Beautiful

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Key Facts In This Video

  1. Otter fur has up to 1 million hairs per-square-inch because they have no insulating fat. 00:57

  2. Otters sleep floating on their backs. 02:16

  3. Mother seals train baby seals how to swim when they're born, much like humans. 02:55

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