The agile and graceful tumbling Olympians of the Amazonian rivers, Giant Otters are able to swim 100 metres in less than 30 seconds. They are also known as the Lobo de Rio (the River wolf), Los Lobos del Rio (Wolves of the River) and Ariranha. They are most active in the mornings and evenings and take a siesta during the hottest parts of the day.
The most significant threats to giant otters are anthropogenic pressures of deforestation for palm oil, soy and meat, pollution from mining and climate change. They are also illegally hunted and traded for their pelts or killed in retribution by fishermen.