Savi's Pipistrelle, Hypsugo savii (also often given as Pipistrellus savii) is a species of vesper bat

Vesper bat

Vesper bats , also known as Evening bats or Common bats, are the largest and best-known family of bats. They belong to the suborder Microchiroptera . There are over three hundred species distributed all over the world, on every continent except Antarctica...

 found across Eurasia

Eurasia

Eurasia is a continent or supercontinent comprising the traditional continents of Europe and Asia ; covering about 52,990,000 km2 or about 10.6% of the Earth's surface located primarily in the eastern and northern hemispheres...

. Its summer habitat is not known, but in winter it favors caves, old buildings, and rock crevices. The Hypsugo savii and the Pipistrellus kuhlii have a share of similarities. They live rather close to each other, and their eating habits, selection of homes, hunting behavior, and reproduction are found to be very similar.