Common Fat-tailed Mouse Opossum vs Common iceplant

Thylamys pusillus compared with Mesembryanthemum crystallinum

Key Differences

• Common Fat-tailed Mouse Opossum is Least Concern while Common iceplant is Not Evaluated.

Taxonomic Classification

Rank	Common Fat-tailed Mouse Opossum	Common iceplant
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Magnoliopsida (Dicots)
Order	Didelphimorphia (Didelphimorphia)	Caryophyllales (Caryophyllales)
Family	Didelphidae	Aizoaceae
Genus	Thylamys	Mesembryanthemum
Species	Thylamys pusillus	Mesembryanthemum crystallinum

Conservation Status

Common Fat-tailed Mouse Opossum

LC — Least Concern

Common iceplant

NE — Not Evaluated

Physical Characteristics

Attribute	Common Fat-tailed Mouse Opossum	Common iceplant
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Fat-tailed Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Common iceplant

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Asia (Cyprus, India, Turkey), Europe (13 countries), North America (Mexico, United States), and South America (Chile, Ecuador).

Common Fat-tailed Mouse Opossum

The Common Fat-tailed Mouse Opossum (<em>Thylamys pusillus</em>) is a small marsupial belonging to the genus Thylamys within the family Didelphidae. Like other members of its genus, this species typically stores fat in its tail, which becomes swollen during periods of food abundance and is metabolised during leaner times, a physiological adaptation that provides energy reserves. <em>Thylamys pusillus</em> is generally found in diverse terrestrial and aquatic ecosystems, often in dry woodlands, scrublands, and grassland habitats of South America. The species is assessed as Least Concern on the IUCN Red List, indicating it is not currently considered at risk of extinction. Detailed geographic range data are not available in the current record, but members of this genus are typically distributed across parts of Argentina, Bolivia, Paraguay, and Uruguay. Biological traits including average lifespan, body dimensions, and specific dietary composition remain poorly documented in the scientific literature, though Thylamys species are generally considered omnivorous, often consuming insects, small vertebrates, and plant material.

Common iceplant

<em>Mesembryanthemum crystallinum</em>, commonly known as the common iceplant, is a succulent annual or short-lived perennial in the family Aizoaceae. Its conservation status has not been formally evaluated by the IUCN. The species is distributed across Asia, Europe, North America, and South America, with a wide global footprint that includes both native populations and naturalized occurrences. It typically inhabits coastal and arid environments, saline soils, disturbed ground, and rocky slopes where competition from other vegetation is limited. The plant is named for the glistening bladder-like cells on its surface that resemble ice crystals. Diet information for this species is not available in current records. Biological traits of this species remain poorly documented in the scientific literature.