Peromyscus polionotus, a nocturnal rodent in the family Cricetidae, found in the southeastern United States. / Thomasomys, a genus of rodent found in South America.

Perognathus species / Chaetodipus species

Any of the didelphids in the genera Marmosa, Thylamys, and Tlacuatzin.

Peromyscus gossypinus, an omnivorous rodent of the southeastern United States, often using cotton for nest construction.

A spider of the genus Missulena in the mygalomorph family Actinopodidae.

The Terrytoons superhero cartoon mouse. / A small U.S. military rocket from the 1950s.

(computing) A hard plastic or rubbery disc on a computer mouse, rotated by the user in order to scroll the display.

(simile, idiomatic) Very quiet, so as to not be heard

A small mammal of the order Rodentia, usually Mus musculus, which is bred and kept for scientific research.

A laboratory mouse.