The pygmy mouse is one of the smallest rodents on Earth. Its body length is only 5–8 centimeters, and its weight is no more than 15 grams.
The pygmy mouse differs from other mice in its very small size, long grasping tail, and nests built high in the grass. It is important for nature because it eats harmful insects and serves as food for birds and predatory mammals.
Climbs plant stems and collects food with front paws.
meadows, prairies, forb glades on land
homogamy, reproduction always with fertilization, no alternation of generations
Whiskers count
Worker
Tail size
birth time
breeding
Dogs, dolphins, lynx hang out for 9-25 years and party on their birthday three times a year
m
Map
will celebrate their {n} birthday
g
t
When your next jubilee falls in {name} life years
Human
days
Warm summer
How old you would be if you lived as {name}
Theoretical maximum lifespan estimated from the Dynamic Energy Budget (DEB) mathematical model. This value reflects a biological potential derived from metabolic parameters, not from direct observation — real recorded lifespans are often significantly shorter.
live animals
adult
Maturity
insects
About health
milk
When your next birthday would fall if you lived as {name}
Repro interval
results
protection from predators
summer warm, winter not very cold
Colors
Sex
Upcoming jubilees
Gremllins
mo
Trophic type
Climbs plant stems and collects food with front paws.
Filters
grain
carnivory / predation, hunt and eat other live animals
Tail count
Palearctic realm
Paws size
Upcoming birthdays
Breeding structure built or used for laying eggs and raising offspring.
in bushes or on a tree
eggs, roe or offspring develop in a nest built on the ground or close to it
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
leaf
nest on the ground
rains almost always, very humid
young are born live on land, not hatched from eggs or roe
Age (juvenile)
insect larvae and caterpillars
Age (from birth to death)
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
Jubilee = every 10th birthday
berries
Ears size
Earliest developmental stage inside an egg or womb.
Business sausages
fruits
Lifespan average
nest located directly on the ground surface on land, only the mother provides parental care for the offspring
in a terrestrial nest
dry grass
Whiskers size
live birth
What do they look like?
Maturity
emergence (insects)
end of lifespan
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
end of acceleration
Share
Find a pet...
Mature, fully developed individual capable of reproduction.
Pets
juicy berries — bilberry, rowan, rosehip
Feeding occurs primarily on land or in vegetation.
{name} jubilee
paw
cm
Old-timers
Find an animal or breed...
turns
Rascals
terrestrial forest
terrestrial herbaceous
Tail color
Flooded grasslands
Paws color
drink mother's milk in childhood
grains of cereals — wheat, rice, millet, maize
Ears count
Litter size
Map data sources: Ecosystem classification — IUCN Global Ecosystem Typology (Keith et al., 2022), indicative distribution maps Keith et al. (2020), https://doi.org/10.5281/zenodo.3546513; Large Marine Ecosystems — NOAA LME Program; Bathymetry — GEBCO Bathymetric Compilation Group (2026), GEBCO_2026 Grid, https://doi.org/10.5285/4f68d5c7-45eb-f999-e063-7086abc036fa; Climate data — Generated using Copernicus Climate Change Service information; Species occurrence data — GBIF.org, Derived dataset "all animals", https://zveriki.com/dataset/dataset.tsv; Terrestrial ecoregions — RESOLVE Ecoregions 2017 (Dinerstein et al., 2017), CC BY 4.0
How to care for them?
cereal seeds
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
°C
Not specified
Actively searching habitats to locate food items.
Where are they found?
steppe
larvae
Paws count
Describes food handling or digging performed with the forelimbs.
Whiskers color
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Elders
Bro
normal sexual
Taxons
seeds, berries, fruits
if born as {name}
Foraging takes place among trees and woody vegetation.
omnivore
age
birth date
Palearctic realm
rest
Fur color
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
climbing
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
Insects
primary food sources
after transformation until death
Potential Habitat
d
In husbandry
On the go from 1.3 to 3.5 years. Forest mice, anoles, rainbow fish party on their birthday once a month
lots of rain, summer not hot
Mass
cold winter, lots of coniferous trees: spruce, pine
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
terrestrial
Plants
Gestation
land
{name} birthday
Food is gathered directly from leaf surfaces.
No results found
On the map
Pleasant summer
all life stages
Female ♀
nest located directly on the ground surface on land
Map data sources: Ecosystem classification — IUCN Global Ecosystem Typology (Keith et al., 2022), indicative distribution maps Keith et al. (2020), https://doi.org/10.5281/zenodo.3546513; Large Marine Ecosystems — NOAA LME Program; Bathymetry — GEBCO Bathymetric Compilation Group (2026), GEBCO_2026 Grid, https://doi.org/10.5285/4f68d5c7-45eb-f999-e063-7086abc036fa; Climate data — Generated using Copernicus Climate Change Service information; Species occurrence data — GBIF.org, Derived dataset "all animals", https://zveriki.com/dataset/dataset.tsv; Terrestrial ecoregions — RESOLVE Ecoregions 2017 (Dinerstein et al., 2017), CC BY 4.0
Potential habitat modelled from GBIF occurrence data. Map © Zveriki.com, licensed under CC BY 4.0.
birth year
lots of grass, few trees, rains occur
Shelter used specifically for reproduction or nesting.
Maturity
Skin color
terrestrial habitat, land surface outside water
sq mm
yr
comfortable summer, +20…+25 °C
How similar?
Male ♂
until the celebration
baby / chick
age as {name}
How do they breed?
On the go from 3.5 to 6 years. Hedgehogs, crows, lizards treat themselves to birthday snacks 6 times a year
What if eaten?
Neither
Moving up vertical surfaces like trunks or rocks to reach food.
Young offspring still dependent on parental care.
nest
caring mother
What do they eat?
insect larvae
Where do they live?
Ears color
berries
forests on land — tropical, temperate, boreal
water often floods the land, lots of grass
Temperate mixed forest
nest high on shrub or tree branches
Duration
live insects
This is me
most of Europe and Asia, various forests, steppes and tundra
Always very wet
Gamers
How are they built?
Cool summer and lots of rain
Temperate steppe
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
terrestrial
Taiga
Asexual
swap
Rabbits, falcons, red-eared turtles hang out for 6-9 years and party on their birthday four times a year
Where do they take shelter?
Denotes a grassland or steppe habitat preference.
Warm summer and lots of rain
inhabit and develop on land, outside water bodies
stems
celebrated their {n} birthday
When you would have been born if you lived as {name}
Daddies
Lifespan maximum
foraging
Hermaphrodite ⚥
Grape
8 to 11 grams, 1.5 – 8 centimeters
embryo
summer warm, many oaks, birches, maples
Length
kg
lots of rain, warm and pleasant summer
arboreal
Observations
◉{N} more on tap