In a group, they could also make short work of a five-foot-long caiman, devouring the reptile—skull, bones and all—in 45 minutes. Most of the time, however, giant otters prefer fish. Brecht Munn wrote ...

The giant otter (Pteronura brasiliensis) is an endangered species, according to the International Union for Conservation of Nature (IUCN). A recently published report authored by more than 50 ...