Species MammalsSouthern Pygmy Mouse

Southern Pygmy Mouse

Baiomys musculus

RareMammal
Illustration of Southern Pygmy Mouse (Baiomys musculus)

The Southern Pygmy Mouse is a tiny rodent of Pacific-slope grasslands in Mexico and Central America, closely related to the northern pygmy mouse found in Texas. It is entirely dark, brownish-gray, and represents one of the smallest rodents in the Neotropical region. Its ecological role is similar to that of its northern relative—a herbivorous seed and grass feeder in open country.

Habitat
Tropical grasslands and brushy areas of Pacific Mexico and Central America
Diet
Grass seeds and green plant material
How common
Rare

Recent Southern Pygmy Mouse sightings near you

Live, research-grade observations from iNaturalist. Allow location to center the map on you.

Spot a Southern Pygmy Mouse? Identify it instantly.

Point Huck at any plant or animal and get an instant ID, rarity, and field notes — building your personal nature collection as you go.

Get Huck — free

More mammals

Abert's Squirrel
Abert's Squirrel
Sciurus aberti
Agricola's Gracile Opossum
Agricola's Gracile Opossum
Cryptonanus agricolai
Alaska Marmot
Alaska Marmot
Marmota broweri
Alaska Peninsula Brown Bear
Alaska Peninsula Brown Bear
Ursus arctos gyas
Alaskan Hare
Alaskan Hare
Lepus othus
Alaskan Mink
Alaskan Mink
Neogale vison ingens
Alfaro's Pygmy Squirrel
Alfaro's Pygmy Squirrel
Microsciurus alfari
Allen's Big-eared Bat
Allen's Big-eared Bat
Idionycteris phyllotis