Otter Paws

Otter Paws

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

03:51

Key Facts In This Video

  • 1

    Otter fur has up to 1 million hairs per-square-inch because they have no insulating fat. (0:57)

  • 2

    Otters sleep floating on their backs. (2:16)

  • 3

    Mother seals train baby seals how to swim when they're born, much like humans. (2:55)

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