Giant Otter

Pteronura brasiliensis

The giant otter (Pteronura brasiliensis) is a large social otter of South American rivers, oxbow lakes, wetlands, and flooded forests. It has a long muscular body, webbed feet, dense brown fur, and pale throat markings that can help identify individuals. Family groups are vocal and cooperative, hunting fish and defending territories along riverbanks with dens, campsites, and latrine areas. Heavy hunting for fur once reduced populations across much of the range.

Zoos and conservation programs manage giant otters as intelligent, active carnivores with strong social bonds. Captive habitats need deep clean pools, land areas, digging or denning sites, fish-based diets, enrichment, and protected keeper access. Pair and family management can be sensitive, especially around pups. Field stewardship includes river habitat protection, fishery conflict reduction, mercury and mining controls, and monitoring by camera, track, scat, or throat-pattern records. Sanctuaries caring for displaced animals must plan for noise, space, group compatibility, and lifelong aquatic care.