Meet the world’s animals.

Photos: 12,636 · Stories: 19,540

• Tres Marías Deer Mouse Peromyscus madrensis

  

  This mouse is known from the Islas Marías off Mexico’s Pacific coast. Its records are tied to islands separated from the mainland.

• Black Giant Squirrel Ratufa bicolor

  

  The black giant squirrel is a large, tree-dwelling squirrel of forests in South and Southeast Asia. Its dark coat, pale chest marking and long tail are distinctive.

• Southern Pygmy Mouse Baiomys musculus

  

  The Southern Pygmy Mouse is a small mouse whose back fur varies from reddish-brown to dark across its range. It has been found in grassy and shrubby places and eats grass seeds, nuts, and other plant foods.

• Colorado Chipmunk Tamias (Neotamias) quadrivittatus

  

  The Colorado chipmunk occurs in the southwestern United States, including Colorado and Utah. It forages on the ground and around logs, and stores food.

• Long-tailed Colilargo Oligoryzomys longicaudatus

  

  A small rice rat found in Chile and Argentina. It has a long tail and is mostly nocturnal and terrestrial, though it climbs well.

• Japanese squirrel Sciurus (Sciurus) lis

  

  A squirrel of Japanese forests. It is active by day and continues foraging through winter without hibernating.

• California Deermouse Peromyscus californicus

  The California deermouse is a relatively large mouse with a white underside and feet. It is active at night and often eats California bay seeds in woodland.

• Gray-collared Chipmunk Tamias (Neotamias) cinereicollis

  This chipmunk occurs in Arizona and New Mexico in the United States. It mainly uses conifer forests and mature woodlands and gathers and stores seeds.

• Hatt's Vesper Rat Otonyctomys hatti

  Hatt’s vesper rat is a small mouse with russet fur and a pale underside. It is often found in trees and feeds on seeds and fruits.

• Cream-coloured Giant Squirrel Ratufa affinis

  The cream-coloured giant squirrel is a large squirrel active by day in the upper canopy. It eats fruit and other plant matter, as well as insects.

• Chiapan Deermouse Peromyscus zarhynchus

  The Chiapan deermouse is a forest mouse from Chiapas in southern Mexico. It has large ears and a long tail, and has also been recorded as a host for a beetle.

• Mohave Ground Squirrel Xerospermophilus mohavensis

  This small ground squirrel lives only in California's western Mojave Desert. It is active by day and spends much of the year underground.

• Western Amazonian Nectomys Nectomys apicalis

  Nectomys apicalis is a rodent of the western Amazon. A study recorded it in mature forest close to streams at Peru's Allpahuayo-Mishana National Reserve. The paper also reports the western Amazon form from eastern Ecuador, Peru, and Brazil's Juruá region.

• White-tailed antelope squirrel Ammospermophilus leucurus

  A ground squirrel that moves with its tail held over its back, it lives in deserts and dry shrublands.

• Yellow-nosed Cotton Rat Sigmodon (Sigmodon) ochrognathus

  The Yellow-nosed Cotton Rat uses high-elevation grasslands and rocky slopes, where it makes nests and burrows.

• Washington Ground Squirrel Urocitellus washingtoni

  The Washington ground squirrel lives in grasslands from eastern Washington to north-central Oregon. It has short legs and rounded ears, and spends the long winter underground.

• Amazonian Marsh Rat Holochilus sciureus

  The Amazonian Marsh Rat uses waterside habitats and wet grasslands. Coat color and reported range vary, and the older broad species account includes records that its authors considered uncertain.

• Gray-footed Chipmunk Tamias (Neotamias) canipes

  This chipmunk lives in mountains of southeastern New Mexico and western Texas. It is mainly terrestrial and stores acorns and other seeds for winter.

• Hirsute Cotton Rat Sigmodon (Sigmodon) hirsutus

  The hirsute cotton rat occurs in grasslands and agricultural areas from Central America into northern South America. It was formerly treated as a subspecies of S. hispidus.

• Woolly Flying Squirrel Eupetaurus cinereus

  The woolly flying squirrel has a dense coat and a gliding membrane between its limbs. In the northern Pakistan highlands, it remains active in winter and feeds on mosses and other foods.

• Sanborn’s Akodont Abrothrix sanborni

  This small mouse is uniformly blackish brown, including its tail and feet, with little contrast between the upper and lower sides. It has been recorded in coastal rainforests of southern Chile and in Argentina.

• Santander dwarf squirrel Microsciurus santanderensis

  The Santander dwarf squirrel is a small forest squirrel from Colombia. Orange and black fur is reported, but taxonomic confusion leaves its ecology poorly known.

• Dusky Melanomys Melanomys caliginosus

  The dusky melanomys is a rodent of forests in western Colombia and southwestern Ecuador. Its back is generally dark, although coat color varies geographically. The 2017 species account says its broad taxonomic concept needs further revision.

• Red Bush Squirrel Paraxerus palliatus

  This diurnal squirrel occurs in coastal forests from East to southern Africa. It eats fruit and nuts, and regional forms differ in coat shade and body size.