Giant Otter vs Small Adder's-Tongue

Pteronura brasiliensis compared with Ophioglossum azoricum

Key Differences

• Giant Otter is Endangered while Small Adder's-Tongue is Critically Endangered.

Taxonomic Classification

Rank	Giant Otter	Small Adder's-Tongue
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Tracheophyta
Class	Mammalia (Mammals)	Polypodiopsida (Polypodiopsida)
Order	Carnivora (Carnivorans)	Ophioglossales (Ophioglossales)
Family	Mustelidae (Weasels & Otters)	Ophioglossaceae
Genus	Pteronura	Ophioglossum
Species	Pteronura brasiliensis	Ophioglossum azoricum

Conservation Status

Giant Otter

EN — Endangered

Small Adder's-Tongue

CR — Critically Endangered

Physical Characteristics

Attribute	Giant Otter	Small Adder's-Tongue
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.

Small Adder's-Tongue

Habitat

Inhabits boreal forests and taiga within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, Iceland, Norway, Portugal, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.