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 ...

Otters are among the most adaptable mammals alive, thriving everywhere from icy coasts to steamy rainforests. This list reveals the eight largest species, from the massive giant otter of South America ...

Conservationists released a family of “Argentina’s top aquatic predator” for the first time since the species went considered locally extinct. Photo from Fundación Rewilding Argentina In a wetland of ...

In a wetland of northeastern Argentina, a family of the country’s “top aquatic predator” ventured outside their enclosure for the first time. They didn’t run or even wander very far, but that wasn’t ...