North American river otters can grow to four feet long from tip to tail. The phrase “this place is a pigsty” might need to be replaced with “this place is an otter latrine.” Particularly the busy ...

In a new study published in Frontiers in Mammal Science, Smithsonian scientists analyzed the otters' diets and "latrine" habitats in the Chesapeake Bay for the first time. They discovered river otters ...

Three North American river otters play in the snow on the docks of the Smithsonian Environmental Research Center. Detected with SERC’s night-vision wildlife cameras. North American river otters have ...

North American river otters have lived for a long time in Chesapeake Bay, yet relatively little is known about how their surroundings impact them. So what does daily life for river otters on the ...

You might think river otters would be deathly afraid of alligators. After all, alligators do prey on otters. However, would you believe that sometimes it’s the other way around? A video taken in ...

Humans have hunted the Giant River Otter, contaminated its waterways, taken its food supplies and destroyed its nesting grounds. Today a new refuge for the world's largest otter faces a further ...

Research involving North American river otters based at Monroe County’s Seneca Park Zoo has concluded the fascinating animals can visually discriminate between two-dimensional objects and detect ...

New research from the Smithsonian Environmental Research Center in Edgewater on river otter feces in the Chesapeake Bay makes revelations about the animal’s diet, the ecological role of parasites and ...