Fat Sand Rat vs limestone fern

Psammomys obesus compared with Gymnocarpium robertianum

Key Differences

• Fat Sand Rat is Least Concern while limestone fern is Critically Endangered.

Taxonomic Classification

Rank	Fat Sand Rat	limestone fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Tracheophyta
Class	Mammalia (Mammals)	Polypodiopsida (Polypodiopsida)
Order	Rodentia (Rodents)	Polypodiales (Polypodiales)
Family	Muridae (Mice & Rats)	Cystopteridaceae
Genus	Psammomys	Gymnocarpium
Species	Psammomys obesus	Gymnocarpium robertianum

Conservation Status

Fat Sand Rat

LC — Least Concern

limestone fern

CR — Critically Endangered

Physical Characteristics

Attribute	Fat Sand Rat	limestone fern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Fat Sand Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

limestone fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

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