Ballena azul vs Regal Oecomys

Balaenoptera musculus compared with Oecomys rex

Key Differences

• Ballena azul is Vulnerable while Regal Oecomys is Least Concern.

Taxonomic Classification

Rank	Ballena azul	Regal Oecomys
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order	Cetacea (Whales & Dolphins)	Rodentia (Rodents)
Family	Balaenopteridae (Rorquals)	Cricetidae
Genus	Balaenoptera (Rorquals)	Oecomys
Species	Balaenoptera musculus	Oecomys rex

Evolutionary Relationship

Ballena azul and Regal Oecomys share a common ancestor at the Class level: Mammalia. (mamíferos)

Conservation Status

Ballena azul

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Regal Oecomys

LC — Least Concern

Physical Characteristics

Attribute	Ballena azul	Regal Oecomys
Diet	Carnivore	—
Average Lifespan	90 years	—
Average Length	30.0 m	—
Average Weight	150.0 t	—

Habitat & Geographic Range

Ballena azul

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Regal Oecomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Venezuela.

Ballena azul

El animal más grande que se conoce haya vivido en la Tierra; las ballenas azules pueden alcanzar 33 metros y 200 toneladas — sus corazones solos pesan tanto como un automóvil pequeño. Se encuentran en todos los océanos y migran entre las zonas de alimentación polares y las áreas de reproducción tropicales. Son filtradoras que consumen hasta 4 toneladas de kril al día. En peligro de extinción, con poblaciones globales estimadas entre 10.000 y 25.000 tras casi extinguirse por la caza de ballenas en el siglo XX.