[1] The species was described in 1845 by German zoologist Eduard Friedrich Eversmann, who placed it the genus Vespertilio.

However, more recent studies indicate that they form a distinct species, the Siberian bat (Myotis sibiricus).

[1] It has dark gray or brown fur that is grayish underneath with golden tips.

[10] However, researchers have also identified molecular evidence for long lifespans in true Brandt's bats, including changes in growth hormone receptors and insulin-like growth factor 1 receptors that likely contribute to a long life expectancy.

By roosting in caves, it is able to avoid extreme weather conditions and predators, increasing its chances of living a long life.

It meets the criteria for this designation because it is an abundant, widespread species, with no indication of a decline in its population.

[1] Like all bat species in Europe, the Brandt's bat is a European Protected Species, meaning that it is illegal to deliberately capture, kill, injure, or disturb individuals; in addition, their roosts are protected as "breeding or resting" places.