Big Finner vs Lesser Short-tailed Rat

Balaenoptera physalus compared with Brachyuromys betsileoensis

Key Differences

• Big Finner is Endangered while Lesser Short-tailed Rat is Least Concern.

Taxonomic Classification

Rank	Big Finner	Lesser Short-tailed Rat
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class same	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Cetacea (Whales & Dolphins)	Rodentia (อันดับสัตว์ฟันแทะ)
Family	Balaenopteridae (Rorquals)	Nesomyidae
Genus	Balaenoptera (Rorquals)	Brachyuromys
Species	Balaenoptera physalus	Brachyuromys betsileoensis

Evolutionary Relationship

Big Finner and Lesser Short-tailed Rat share a common ancestor at the Class level: Mammalia. (สัตว์เลี้ยงลูกด้วยน้ำนม)

Conservation Status

Big Finner

EN — Endangered

Lesser Short-tailed Rat

LC — Least Concern

Physical Characteristics

Attribute	Big Finner	Lesser Short-tailed Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big Finner

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Lesser Short-tailed Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Big Finner

Big Finner (Balaenoptera physalus) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.