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 ...

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 ...

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 ...

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 ...