Giant otters (Ariranha, Pteronura brasiliensis) were once almost extinct from most rivers in Brazil. In the last 15 years the Negro river has seen a fantastical come-back of these wonderful animals. They live in families and are highly social, using up to 40 different vocalizations to communicate between themselves and their environment. Their behaviour is very complex, amphibious and diurnal.
Perfect for watching for hours !