Based on time of year and the climate which the bat is found their dorsal pelage can range in various shades.

Argentine brown bats have distinctive; husky bodies, a large broad head, with short round ears.

Sexual dimorphism is found in the Argentine brown bat where females are usually bigger in size.

Typically Eptesicus furinalis is found in grasslands and forested regions, but they are never seen in arid lands.

This species has a vast range from southern Mexico through lower Central America including countries like Belize, Guatemala, and Panama.

[5] Argentine brown bats are not known to migrate, so the likelihood of this species to carry the rabies virus is small.