common opossum vs Kozlov s Pika

Didelphis marsupialis compared with Ochotona koslowi

Key Differences

• common opossum is Least Concern while Kozlov s Pika is Endangered.

Taxonomic Classification

Rank	common opossum	Kozlov s Pika
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Didelphimorphia (Didelphimorphia)	Lagomorpha (Rabbits & Hares)
Family	Didelphidae	Ochotonidae
Genus	Didelphis	Ochotona
Species	Didelphis marsupialis	Ochotona koslowi

Evolutionary Relationship

common opossum and Kozlov s Pika share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

common opossum

LC — Least Concern

Kozlov s Pika

EN — Endangered

Physical Characteristics

Attribute	common opossum	Kozlov s Pika
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

common opossum

Habitat

Inhabits tropical and subtropical moist broadleaf forests within the Neotropic biogeographic realm.

Range

Found across North America (Dominica, Grenada, Saint Lucia) and South America (Colombia, Ecuador, Venezuela).

Kozlov s Pika

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

common opossum

<em>Didelphis marsupialis</em> is a medium-sized marsupial in the family Didelphidae, widely distributed across the Neotropical region, including Colombia, Ecuador, Venezuela, Dominica, Grenada, and Saint Lucia. It inhabits tropical and subtropical moist broadleaf forests, often occurring near human settlements, gardens, and agricultural edges across lowland and montane zones. As a generalist omnivore, this species typically consumes fruits, invertebrates, small vertebrates, carrion, and refuse, making it one of the most adaptable mammals in its range. The common opossum is nocturnal and arboreal, using a prehensile tail for balance and grip while foraging in trees and shrubs. Females give birth to highly altricial young that develop in the marsupium, a defining trait of marsupial reproduction. The IUCN currently classifies this species as Least Concern, reflecting its broad distribution, behavioral flexibility, and tolerance of disturbed habitats. Biological traits such as average lifespan, body length, and body weight are not consistently recorded across populations in standardized databases, and detailed dietary studies remain poorly documented at scale. Its ecological role includes seed dispersal and control of invertebrate populations.