Child’s Rice Rat vs Humpback smooth hound

Nephelomys childi compared with Mustelus whitneyi

Key Differences

• Child’s Rice Rat is Least Concern while Humpback smooth hound is Critically Endangered.

Taxonomic Classification

Rank	Child’s Rice Rat	Humpback smooth hound
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Chondrichthyes (Cartilaginous Fish)
Order	Rodentia (Rodents)	Carcharhiniformes (Ground Sharks)
Family	Cricetidae	Triakidae
Genus	Nephelomys	Mustelus
Species	Nephelomys childi	Mustelus whitneyi

Evolutionary Relationship

Child’s Rice Rat and Humpback smooth hound share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Child’s Rice Rat

LC — Least Concern

Humpback smooth hound

CR — Critically Endangered

Physical Characteristics

Attribute	Child’s Rice Rat	Humpback smooth hound
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Child’s Rice Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Humpback smooth hound

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.

Range

Found in Chile. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Child’s Rice Rat

The Child’s Rice Rat (Nephelomys childi) is a species in the genus Nephelomys. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.