# Greater mouse-eared bat (*Myotis myotis*)

Canonical page: https://creaturedata.com/animals/greater-mouse-eared-bat  
Data as of: 2026-11-13

The greater mouse-eared bat (Myotis myotis) is a living mammal, a bat in the family Vespertilionidae and the genus Myotis. It is in the small size class, with adults typically weighing about 24.8 g and a typical wingspan of about 38.3 cm. It is nocturnal and scansorial, its diet category is invertivore, and its IUCN Red List category is Least Concern (LC).

## Quick facts

| Fact | Value |
|---|---|
| Weight | 24.8 g – 27.1 g |
| Length | Not recorded |
| Wingspan | 38.3 cm |
| Lifespan | 22 years |
| Diet | Invertivore |
| Main food | arthropods |
| Habitat | woodland |
| Gestation | 69 days |
| Young per litter or clutch | 1.25 |
| Age at maturity | 14.8 months – 16.5 months |
| Litters or clutches a year | 1 |
| Active | At night (nocturnal) |
| Lifestyle | Scansorial |
| Brain mass | 480 mg (1.92% of body mass) |
| Conservation status | Least Concern (IUCN) |
| Countries on record | Not recorded |

## Classification

- kingdom: Animalia
- phylum: Chordata
- class: Mammalia
- order: Chiroptera
- family: Vespertilionidae
- genus: Myotis
- species: *Myotis myotis* (Borkhausen, 1797)

Synonyms: *Myotis alpinus*, *Myotis latipennis*, *Myotis murinus*, *Myotis spelaea*, *Myotis submarinus*, *Myotis typus*, *Vespertilio murinus*

## Common questions

### How much does a greater mouse-eared bat weigh?

Adults typically weigh about 24.8 g. The highest value reported by our sources is 27.1 g.

### What is the wingspan of the greater mouse-eared bat?

The typical wingspan is about 38.3 cm.

### What does the greater mouse-eared bat eat?

Its diet category is invertivore, and its trophic level is carnivore.

### Is the greater mouse-eared bat endangered?

No. Its global IUCN Red List category is Least Concern (LC), which is not a threatened category.

### How long does the greater mouse-eared bat live?

The typical lifespan is about 22 years.

### How many young does the greater mouse-eared bat have?

A litter has 1 or 2 young, and there is 1 litter per year. Gestation lasts 69 days.

## Sources

- [An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles](https://doi.org/10.6084/m9.figshare.3563457.v1), CC0 1.0, E096-269. Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1
- [AnimalTraits: a curated animal trait database for body mass, metabolic rate and brain size](https://animaltraits.org/), CC0 1.0, 1.0.7. Herberstein, M.E., McLean, D.J., Lowe, E. et al. (2022) AnimalTraits: a curated animal trait database for body mass, metabolic rate and brain size. Scientific Data 9: 265. https://doi.org/10.1038/s41597-022-01364-9. Data: https://doi.org/10.5281/zenodo.6468938
- [Catalogue of Life eXtended Release](https://www.checklistbank.org/dataset/316691), CC BY 4.0, 2026-10-16 XR. Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf
- [Wikimedia Commons](https://commons.wikimedia.org), per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed), 2026-11-11. Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence).
- [EltonTraits 1.0: species-level foraging attributes of the world's birds and mammals](https://doi.org/10.6084/m9.figshare.3559887.v1), CC0 1.0, 1.0. Wilman, H., Belmaker, J., Simpson, J., de la Rosa, C., Rivadeneira, M.M. & Jetz, W. (2014) EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95: 2027. https://doi.org/10.1890/13-1917.1. Data: https://doi.org/10.6084/m9.figshare.3559887.v1
- [Wikidata](https://www.wikidata.org), CC0 1.0, 2026-11-11. Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service).
- [Wikipedia (English)](https://en.wikipedia.org), CC BY-SA 4.0, 2026-11-11. Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).

Cite as: Greater mouse-eared bat (Myotis myotis). Retrieved from https://creaturedata.com/animals/greater-mouse-eared-bat