Near-shore terrestrial and marine zones influenced by the sea.
Immature form that undergoes metamorphosis before adulthood.
Dry warm summer and snowy winter
Hot and almost no precipitation
prairie
Heavy rains in summer
humid
Map
will celebrate their {n} birthday
summer mild, +15…+20 °C
lots of rain, warm summer, snow in winter
Polar tundra
very hot and very humid all year round, rain almost every day
South and Central America, hot and humid, huge forests
Warm summer
very heavy rains in summer, almost no precipitation in winter
marine
South and Central America, hot and humid, huge forests
Coconut
tropical forest
Oceanian realm
Polar sea
summer warm, winter not very cold
marshes
Cool summer
very hot and almost no rain
Gremllins
hot, rains in summer, little precipitation in winter
pelagic
rains are very rare, almost a desert
alpine shrubland
coastal wetland
Filters
Extensive wetland areas of saturated ground supporting emergent vegetation.
arid steppe cold
Warm or hot summer
the coldest and iciest edge, almost always snow and ice
Palearctic realm
Vast, open saltwater expanses beyond the continental shelf.
Upcoming birthdays
boreal
wetlands
Isolated land surrounded by water, often hosting unique or endemic species.
Open, low-growing shrub habitat on poor soils, home to reptiles, birds, and small mammals.
Lifespan
Non-saline aquatic environments such as rivers and lakes.
farmland
rains almost always, very humid
grassland
Very hot and almost dry
Rock-strewn scrub vegetation supporting drought-tolerant and ground-dwelling animals.
most of Europe and Asia, various forests, steppes and tundra
Wanderers
world of Australasia
Jubilee = every 10th birthday
scrub
Warm summer and frequent rains
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
water is almost always cold, there may be ice in winter, not hot in summer
Arid steppe
coastal dune
How do they behave?
Broad regions of marshes, swamps, and shallow waters.
Tidal wetland with salt-tolerant grasses and herbs periodically flooded by seawater.
Human-built environments within towns and cities.
Freshwater
very cold, lots of snow and ice
water is cool or warm, cold in winter, comfortable to swim in summer
from 0.5 to 0.8 kilograms, 0.5 – 1 meter
world of Antarctica
all rivers and lakes
snow humid cool
humid forest
Woodlands growing on lowlands directly adjacent to the sea.
Transitional zone between closed forest and open land.
mixed forest
coastal forest
Lots of rain and cool summer
Hot steppe
Flowing freshwater channel within a defined bed.
{name} jubilee
live in homes and on farms
cm
Summer from cool to warm
Old-timers
Tidal marshes, mangroves and estuaries providing habitat for waterbirds and amphibians.
Low, dense shrub vegetation in semi-arid or coastal zones with few tall trees.
turns
Rascals
hot Africa south of the desert, many savannas and forests
intertidal
temperate forest
Dry cool summer and snowy winter
Seasonally dry tropical forest with heavy monsoon rainfall periods.
Where are they found?
steppe
all rivers and lakes
beach
Summer almost without rain
Elders
Bro
always frost, even in summer it's cold
winter dry and warm
rocky
Temperate sea
almost no rain in summer, more precipitation in winter
riverine forest
Forest vegetation covering mountain slopes, varying with altitude.
birth date
Palearctic realm
montane grassland
riverine
coastal
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
rocky shrubland
dry, lots of grass, few trees
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
arid steppe
Potential Habitat
Always frosty
Very hot summer
Hot, almost no rain in summer
In husbandry
On the go from 1.3 to 3.5 years. Forest mice, anoles, rainbow fish party on their birthday once a month
cave
lots of rain, summer not hot
Mass
scrubland
Wind-formed sand ridges stabilized by vegetation along shores.
Always hot
No results found
montane shrubland
On the map
Large inland standing freshwater body supporting diverse aquatic and shoreline species.
Female ♀
river
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.
Areas along flowing freshwater rivers supporting specialized aquatic and riparian species.
warm temperate humid
birth year
lots of rain, summer from warm to very hot
salt marsh
sq mm
How similar?
dry and cool summer, winter with snow
live in homes and on farms
water is almost always cold, there may be ice in winter, not hot in summer
Male ♂
until the celebration
On the go from 3.5 to 6 years. Hedgehogs, crows, lizards treat themselves to birthday snacks 6 times a year
What if eaten?
Very dry
Neither
Mixed tree cover with moderate canopy and understory, supporting diverse woodland fauna.
Lots of rain and warm summer
much snow in winter, cold
Land saturated with water supporting aquatic plants.
boreal forest
world of Afrotropics
Freshwater
savanna
arid woodland
many islands in the Pacific Ocean, warm seas and corals
Always hot and wet
Warm summer with almost no rain
Always very wet
How are they built?
coast
mm
Theoretical lifespan
ml
Stars
Link copied
the coldest and iciest edge, almost always snow and ice
My age?
sea almost always covered with thick ice, very cold all year round
open woodland
Terrain dominated by exposed rock supporting species adapted to hard, uneven surfaces.
Subpolar sea
Sandy or pebbly shorelines exposed to tides and waves.
Southeast Asia and islands, always hot and humid
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
rainforest
many islands in the Pacific Ocean, warm seas and corals
monsoon forest
very hot all year round, frequent rains, but sometimes dry
garden
Lifespan maximum
very hot and almost no precipitation
shrubland
taiga
Cold sea
North America and Greenland, from tundra to forests
tropical rainforest
embryo
grasslands
kg
lots of rain, warm and pleasant summer
forest edge
Observations
Worker
alpine grassland
Hot summer almost without rain
birth time
woodland
Wetland with standing or slow-moving water and abundant vegetation.
very cold, short summer, lots of moss
Dogs, dolphins, lynx hang out for 9-25 years and party on their birthday three times a year
m
wetland
g
t
When your next jubilee falls in {name} life years
Human
hot Africa south of the desert, many savannas and forests
High-elevation terrain above lowland zones, often cooler and wind-exposed.
very cold, short summer, almost no trees, lots of moss
days
How old you would be if you lived as {name}
summer from pleasant to very hot
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.
adult
polar tundra
montane
About health
Warm or hot summer and rains
alpine
When your next birthday would fall if you lived as {name}
island
results
summer warm and almost no rain
Southeast Asia and islands, always hot and humid
Sex
cloud forest edge
Upcoming jubilees
marsh
mo
warm temperate humid and hot
little precipitation in winter, more in summer
all seas and oceans
Dynamic interface between land and sea including shore habitats.
summer very hot, dry, lots of grass
Warm winter with almost no precipitation
Winter with snow
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
swamp
Oceanian realm
Height
Open plains dominated by grasses with few trees, supporting grazing and ground-nesting species.
Age (from birth to death)
Hot, little precipitation in winter
Domestic world
ocean
warm temperate
Wetland with waterlogged soil, dominated by grasses and reeds.
dry, cold winter, lots of grass, few trees
forest
Stunted, wind-sculpted montane woodland at high elevations.
Tundra
Very cold winter and hot summer
lakes
mountain
paramo
summer warm, rains frequent
What do they look like?
Maturity
emergence (insects)
end of lifespan
How do they live?
fertilization / egg laying
birth / hatching
metamorphosis / end of larval stage
end of acceleration
Share
arid steppe hot
Find a pet...
Mature, fully developed individual capable of reproduction.
Cold sea
very cold winter and very hot summer
Snowy winter and summer from cool to warm
Pets
Indomalayan realm
Nearctic realm
deciduous forest
Indomalayan realm
Mangrove thickets
Open terrain dominated by grasses with few trees.
Cool, humid forest occurring on mountain slopes at mid to high elevations.
Find an animal or breed...
Wingspan
islands and part of Australia, many unusual animals and plants
cloud forest
warm swampy sea shores, trees on roots
Human-maintained planted spaces around dwellings.
elfin forest
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?
desert
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
coniferous forest
°C
Not specified
the sea is covered with ice most of the year or has many ice floes, very cold in winter
warm temperate humid cool
tropical moist forest
all seas and oceans
High-elevation zones above treeline with cold, rocky terrain.
Open ocean and sea habitats supporting pelagic and deep-water species.
urban
lots of rain, cool summer, snow in winter
alpine meadow
Low precipitation in winter
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
lots of rain, summer from cool to warm, snow in winter
Very cold
Taxons
hot, rains in winter, almost no precipitation in summer
if born as {name}
mountain forest
cold, short summer, almost no trees
Dark underground chambers used by troglophilic species.
age
water is almost always warm, even in winter you can swim, very hot in summer
Close
was
Marine world
Scattered trees with grassy understory and ample light.
Neotropical realm
Dense tree cover forming a closed canopy habitat.
summer is hot and almost no rain falls
Neotropical realm
Temperate sea
lots of grass, few trees, rains are rare
lake
d
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Cultivated fields and pastures shaped by agriculture.
subtropical forest
islands and part of Australia, many unusual animals and plants
water is cool or warm, cold in winter, you can swim in summer
summer very hot, above +25…+30 °C
Warm sea
{name} birthday
Open landscape dominated by shrubs and low woody vegetation.
Nearctic realm
North America and Greenland, from tundra to forests
Hot with heavy summer rains
polar
Pleasant summer
Cold and almost dry
tropical dry forest
world of Afrotropics
dry forest
woodlands
yr
comfortable summer, +20…+25 °C
Tundra
age as {name}
How do they breed?
Open landscape of scattered shrubs and grasses typical of Mediterranean or arid climates.
high grassland
Open-water column away from shore and bottom.
world of Antarctica
What do they eat?
dry and cold almost all year round
Where do they live?
Marine world
warm and hot
early young
heathland
Very hot and dry
dry and warm summer, winter with snow
Wooded corridors lining rivers with dense vegetation sustained by seasonal flooding.
always cold, even in summer it's frosty
This is me
most of Europe and Asia, various forests, steppes and tundra
Steppe
Gamers
hot, heavy rains in summer, little precipitation in winter
Cool summer and lots of rain
arid
wk
My size?
very hot during the day, cold at night, almost no rain
highland grassland
freshwater
montane forest
Asexual
swap
Mangrove forest
Shore zone exposed between high and low tides, inhabited by hardy marine life.
celebrated their {n} birthday
Steep, elevated landforms rising significantly above surrounding terrain.
When you would have been born if you lived as {name}
Cold steppe
Daddies
equatorial humid
Multiple standing freshwater bodies offering varied habitats for fish, birds, and amphibians.
summer not hot, from +15 to +25 °C
world of Australasia
Domestic world
Hermaphrodite ⚥
Extensive tree-dominated landscapes with varied canopy layers and woodland wildlife.
warm swampy shores with trees on roots, crabs live there
Length
Always very cold
◉{N} more on tap