Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammal
- Order
- Didelphimorphia
- Family
- Didelphidae
- Genus
- Thylamys
Habitat
This species primarily inhabits arid and semi-arid shrublands, grasslands, and rocky areas in central and western Argentina. It prefers regions with sparse vegetation for foraging and cover, often at elevations up to 2,000 meters. They are adaptable to disturbed habitats but avoid dense forests.
Diet
It is omnivorous, feeding mainly on insects, spiders, and other invertebrates, supplemented by fruits, seeds, and occasionally small vertebrates. They forage actively at night using their sharp senses to locate food in leaf litter and underbrush. Feeding behavior includes caching food in their tail fat for lean periods.
Behavior
These opossums are nocturnal and solitary, emerging at night to forage and avoiding social interactions except during mating. They exhibit agile climbing abilities and use their tails for balance in shrubs and rocks, with minimal territorial behavior but occasional scent marking. They are known for playing dead when threatened, a defense mechanism common in opossums.
Conservation Status
The IUCN classifies the Argentine fat-tailed mouse opossum as Least Concern, with a stable population trend due to its wide distribution. Major threats include habitat destruction from agriculture and urbanization.