It is hard to guess what a Keen’s myotis weights. But we have the answer:
An adult Keen’s myotis (Myotis keenii) on average weights 6 grams (0.01 lbs).
The Keen’s myotis is from the family Vespertilionidae (genus: Myotis). They can live for up to 18.5 years. When reaching adult age, they grow up to 9.5 cm (0′ 4″). Normally, Keen’s myotiss can have babies 1 times a year.
As a reference: An average human weights in at 62 kg (137 lbs) and reaches an average size of 1.65m (5′ 5″). Humans spend 280 days (40 weeks) in the womb of their mother and reach around 75 years of age.
Keen’s myotis (Myotis keenii) is a species of vesper bat. It is found in British Columbia in Canada and in Washington and Alaska in the United States. It is named after the Rev. John Henry Keen, who collected the specimen that formed the basis for the first scientific description of the species. Classification for Keen’s myotis formerly included the Northern long-eared Myotis (Myotis septentrionalis), resulting in older studies confusing the species for one another.
Animals of the same family as a Keen’s myotis
We found other animals of the Vespertilionidae family:
- Broad-headed pipistrelle with a weight of 6 grams
- Lesser large-footed bat with a weight of 8 grams
- Hardwicke’s woolly bat with a weight of 4 grams
- Northern cave bat with 1 babies per litter
- Bechstein’s bat with a weight of 9 grams
- Damara woolly bat with a weight of 10 grams
- Ridley’s bat with a weight of 4 grams
- Northern broad-nosed bat with a weight of 8 grams
- Indian pipistrelle with a weight of 4 grams
- Banana pipistrelle with a weight of 3 grams
Animals with the same weight as a Keen’s myotis
As a comparison, here are some other animals that weight as much as the Myotis keenii:
- Pacific sheath-tailed bat bringing 6 grams to the scale
- Eisentraut’s pipistrelle bringing 6 grams to the scale
- MacConnell’s bat bringing 6 grams to the scale
- Grey long-eared bat bringing 6 grams to the scale
- African pygmy mouse bringing 6 grams to the scale
- Egyptian pygmy shrew bringing 7 grams to the scale
- Chinese pipistrelle bringing 5 grams to the scale
- Rendall’s serotine bringing 6 grams to the scale
- Myotis bocagei bringing 7 grams to the scale
- Elgon shrew bringing 6 grams to the scale
Animals with the same life expectancy as a Keen’s myotis
Completely different animals, but becoming as old as a Keen’s myotis:
- Bongo (antelope) with an average maximal age of 19.42 years
- European pine marten with an average maximal age of 17 years
- Brown greater galago with an average maximal age of 18.75 years
- Ocelot with an average maximal age of 20.25 years
- Red forest duiker with an average maximal age of 15 years
- Goeldi’s marmoset with an average maximal age of 17.83 years
- Hartebeest with an average maximal age of 20 years
- Common vampire bat with an average maximal age of 19.5 years
- Giant eland with an average maximal age of 16.17 years
- Greater mouse-eared bat with an average maximal age of 22 years