Amazon Black Howler vs Small Adder's-Tongue

Alouatta nigerrima compared with Ophioglossum azoricum

Key Differences

• Amazon Black Howler is Least Concern while Small Adder's-Tongue is Critically Endangered.

Taxonomic Classification

Rank	Amazon Black Howler	Small Adder's-Tongue
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Tracheophyta
Class	Mammalia (Mammals)	Polypodiopsida (Polypodiopsida)
Order	Primates (Primates)	Ophioglossales (Ophioglossales)
Family	Atelidae	Ophioglossaceae
Genus	Alouatta	Ophioglossum
Species	Alouatta nigerrima	Ophioglossum azoricum

Conservation Status

Amazon Black Howler

LC — Least Concern

Small Adder's-Tongue

CR — Critically Endangered

Physical Characteristics

Attribute	Amazon Black Howler	Small Adder's-Tongue
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazon Black Howler

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Amazon Black Howler

The Amazon Black Howler (Alouatta nigerrima) is a species in the genus Alouatta. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.