What is the rodent, Alston's brown mouse, also known as?

Alston's brown mouse, also called Alston's singing mouse, is a species of rodent found in Central America, from Chiapas, Mexico, to western Panama.

Both males and females produce vocalizations which are characterized by singing bouts containing both sonic and ultrasonic elements. Male songs tend to be longer than females, but seem to share similar spectral characteristics. Because of their length and complexity, these vocalizations have been described as "song". When singing, the mouse rears on its hind legs and extends its neck, facing upward while producing a stereotypical call of up to 10 seconds. The song is loud, with components audible to humans typically occurring towards the end of the call. The exact function of the singing behavior is not yet well understood, but it is believed to play an important role in social communication. Different brain systems are responsible for the melody of the songs and the coordination of duets with another mouse.

Male Alston's singing mice sing to attract mates and to warn off other males of their species from their territories. They react to songs of the related, larger, competing species, the Chiriqui brown mouse by silently retreating.