Merriam’s Pocket Mouse vs tiny risso snail

Perognathus merriami compared with Rissoa parva

Taxonomic Classification

Rank	Merriam’s Pocket Mouse	tiny risso snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (cordados)	Mollusca (Moluscos)
Class	Mammalia (mamíferos)	Gastropoda (Gastrópodes)
Order	Rodentia (Roedores)	Littorinimorpha (Littorinimorpha)
Family	Heteromyidae	Rissoidae
Genus	Perognathus	Rissoa
Species	Perognathus merriami	Rissoa parva

Evolutionary Relationship

Merriam’s Pocket Mouse and tiny risso snail share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Merriam’s Pocket Mouse

LC — Least Concern

tiny risso snail

LC — Least Concern

Physical Characteristics

Attribute	Merriam’s Pocket Mouse	tiny risso snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Merriam’s Pocket Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

tiny risso snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.