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River Otters

Media Photo/Video

August 14, 2025

Footprint of a North American river otter (Lontra canadensis) on a beach at the Smithsonian Environmental Research Center.

Footprint of a North American river otter (Lontra canadensis) on a beach at the Smithsonian Environmental Research Center (Credit: Calli Wise, Smithsonian Environmental Research Center)

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Research News

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  • Environmental Research Center
  • Research News

Related Media

woman in woods looking for otter scat

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document

River Otters

08.14.2025
river pier

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River Otters

08.14.2025
Closeup of otter scat on a wooden marsh overlook.

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River Otters

08.14.2025
Feces (“scat”) from North American River Otters.

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River Otters

08.14.2025
Research technician Calli Wise surveys overstory cover at a forested study site.

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River Otters

08.14.2025

Related Content

  • A North American river otter (Lontra canadensis).

    River Otters Unfazed by Feces and Parasites While Eating…and That’s Good for Ecosystems

    North American river otters have terrible hygiene when it comes to their food. They eat, play and defecate in the same place.

    • August 14, 2025
    • News Release
    • Environmental Research Center
    • Research News
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