Giant otter

The giant otter lives in family groups of 5 to 8 individuals, consisting of a monogamous pair and several generations of offspring. This mammal is notable for its social behavior, engaging in a variety of interactions such as vocalizations, grooming, hunting, and resting.

In the water, the otter adjusts its mode of movement according to its speed. When swimming slowly, it paddles with all four legs while keeping its tail still. When moving quickly, it propels itself by undulating its tail, keeping the legs still.