Giant Otter vs

Pteronura brasiliensis compared with Nostoc sphaericum

Key Differences

• Giant Otter is Endangered while is Not Evaluated.

Taxonomic Classification

Rank	Giant Otter
Kingdom	Animalia (Animals)	Bacteria (Bacteria)
Phylum	Chordata (Chordates)	Cyanobacteria (Cyanobacteria)
Class	Mammalia (Mammals)	Cyanobacteriia
Order	Carnivora (Carnivorans)	Cyanobacteriales
Family	Mustelidae (Weasels & Otters)	Nostocaceae
Genus	Pteronura	Nostoc
Species	Pteronura brasiliensis	Nostoc sphaericum

Conservation Status

Giant Otter

EN — Endangered

NE — Not Evaluated

Physical Characteristics

Attribute	Giant Otter
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Giant Otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Nostoc sphaericum is a colonial, nitrogen-fixing cyanobacterium in the family Nostocaceae, forming gelatinous spherical or irregular colonies visible to the naked eye. It inhabits moist soils, rocks, and freshwater environments, often forming conspicuous blobs after rainfall.