Scientists discovered that river otter droppings contain large numbers of parasites that infect the animals’ prey, indicating that otters may play a significant role in shaping local food webs.

It's no secret that River otters are insanely adorable. They are also very playful little creatures. Unsurprisingly, many people often call them river "puppies." But as playful and rambunctious as ...

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 ...

A family of giant river otters was released into the Iberá National Park in northeast Argentina on July 1. The endangered species, with no known breeding populations in Argentina over the past 40 ...