It is hard to guess what a Gray bat weights. But we have the answer:
An adult Gray bat (Myotis grisescens) on average weights 10 grams (0.02 lbs).
The Gray bat is from the family Vespertilionidae (genus: Myotis). It is usually born with about 2 grams (0 lbs). They can live for up to 39.25 years. When reaching adult age, they grow up to 9.5 cm (0′ 4″). On average, Gray bats can have babies 1 times per year with a litter size of 1.
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.
The gray bat (Myotis grisescens) is a species of microbat endemic to North America. The creature once flourished in caves all over the southeastern United States, but due to human disturbance, gray bat populations declined severely during the early and mid portion of the 20th century. At one cave alone, the Georgetown Cave in northwestern Alabama, populations declined from 150,000 gray bats to 10,000 by 1969. 95% of gray bats now only roost in 9 caves. M. grisescens has been listed as federally endangered by the U.S. Fish and Wildlife Service since 1976, and is protected under the Endangered Species Act. Gray bat populations were estimated at approximately 2 million bats around the time they were placed on the Endangered Species list. By the early 1980s populations of gray bats dropped to 1.6 million. With conservation efforts in place, in 2002, gray bat populations were estimated to have reached 2.3 million.
Animals of the same family as a Gray bat
We found other animals of the Vespertilionidae family:
- Eastern broad-nosed bat with a weight of 11 grams
- Kenyan wattled bat with a weight of 7 grams
- Southern forest bat with a weight of 5 grams
- Painted bat with a weight of 4 grams
- Little forest bat with a weight of 3 grams
- Blanford’s bat with a weight of 6 grams
- Long-legged myotis with a weight of 8 grams
- Brazilian brown bat with a weight of 9 grams
- Yellow serotine with a weight of 10 grams
- Yellow-lipped bat with a weight of 4 grams
Animals with the same weight as a Gray bat
As a comparison, here are some other animals that weight as much as the Myotis grisescens:
- Kelaart’s pipistrelle bringing 8 grams to the scale
- Micronycteris sylvestris bringing 8 grams to the scale
- Greater white-toothed shrew bringing 9 grams to the scale
- Intermediate long-fingered bat bringing 11 grams to the scale
- Baird’s shrew bringing 8 grams to the scale
- Short-tailed shrew tenrec bringing 9 grams to the scale
- Asiatic short-tailed shrew bringing 12 grams to the scale
- Somali shrew bringing 11 grams to the scale
- Usambara shrew bringing 11 grams to the scale
- Antillean ghost-faced bat bringing 8 grams to the scale
Animals with the same litter size as a Gray bat
Here is a list of animals that have the same number of babies per litter (1) as a Gray bat:
- Wahlberg’s epauletted fruit bat
- Insular single leaf bat
- Sclater’s guenon
- Bushveld elephant shrew
- Gemsbok
- Hero shrew
- Black-winged little yellow bat
- Southern tree hyrax
- Blue duiker
- Eastern rock elephant shrew
Animals with the same life expectancy as a Gray bat
Completely different animals, but becoming as old as a Gray bat:
- Black crested gibbon with an average maximal age of 44.08 years
- Sumatran rhinoceros with an average maximal age of 35 years
- Tufted capuchin with an average maximal age of 45.08 years
- Crested servaline genet with an average maximal age of 34 years
- Pygmy hippopotamus with an average maximal age of 43.75 years
- Anoa with an average maximal age of 36 years
- Okapi with an average maximal age of 33 years
- Dromedary with an average maximal age of 40 years
- Crabeater seal with an average maximal age of 39 years
- Javan rhinoceros with an average maximal age of 40 years