Giant river otters were nearly hunted to extinction for their pelts. Their recovery illustrates effective conservation, while habitat degradation and fishing competition remain welfare threats.
Giant river otter welfare recovery has been remarkable but faces ongoing challenges. Mercury poisoning from illegal gold mining operations throughout Amazonia and the Pantanal accumulates in fish that otters eat, causing neurological damage. Family groups disrupted by fishing conflict face reduced foraging success and pup rearing challenges. Otter pups separated from family groups rarely survive. Community fisheries management programs that reduce direct conflict between otters and fishers have enabled coexistence in some areas. Supporting policies that control illegal gold mining addresses both mercury welfare harm and broader ecosystem degradation.