Species MammalsGiant Otter

Giant Otter

Pteronura brasiliensis

Very rareMammal
Illustration of Giant Otter (Pteronura brasiliensis)

The Giant Otter is the world's largest otter, reaching up to six feet in length, and is found in South America with its northern range limit approaching Panama. It is a highly social mustelid that hunts cooperatively in family groups of up to eight individuals. Historically extirpated from much of its range by hunting, it is now listed as Endangered with perhaps 5,000 individuals surviving.

Habitat
Slow-moving rivers and oxbow lakes in tropical South America
Diet
Fish, crabs, and aquatic vertebrates
How common
Very rare

Not certain it is a Giant Otter? What animal is this? walks through what to check first and the lookalikes that catch people out.

Recent Giant Otter sightings near you

Live, research-grade observations from iNaturalist. Allow location to center the map on you.

Spot a Giant Otter? Identify it instantly.

Point Huck at any plant, bird, or animal for an instant ID, its rarity, and a live map of where it is being seen near you.

Get Huck

Get an alert when a Giant Otter is spotted

Pick a park, state, or city and we’ll email you when one turns up there. One check a day, only when there’s something new.

Free. Unsubscribe from any email. See our Privacy Policy.

Love mammals? Get Huck field notes

Spotting tips, new species, and the best of what people are finding in the wild - straight to your inbox.

By subscribing you agree to receive Huck emails. No spam, unsubscribe anytime. See our Privacy Policy.

More mammals

Giant Pocket Gopher
Giant Pocket Gopher
Orthogeomys grandis
Gleaning Mouse
Gleaning Mouse
Peromyscus spicilegus
Golden Mouse
Golden Mouse
Ochrotomys nuttalli
Golden-mantled Ground Squirrel
Golden-mantled Ground Squirrel
Callospermophilus lateralis
Goldman's Spiny Pocket Mouse
Goldman's Spiny Pocket Mouse
Heteromys goldmani
Goldman's Woodrat
Goldman's Woodrat
Neotoma goldmani
Gray Four-eyed Opossum
Gray Four-eyed Opossum
Philander opossum
Gray Fox
Gray Fox
Urocyon cinereoargenteus