Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Immature form that undergoes metamorphosis before adulthood.
Tropical moist forest
Worker
Elders
Bro
Very cold
birth time
Taxons
if born as {name}
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
cold, short summer, almost no trees
g
age
summer mild, +15…+20 °C
t
When your next jubilee falls in {name} life years
Human
birth date
Palearctic realm
Close
was
very cold, short summer, almost no trees, lots of moss
days
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Warm summer
The basics
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.
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
adult
Maturity
arid steppe
Potential Habitat
About health
When your next birthday would fall if you lived as {name}
d
Truck
In husbandry
On the go from 1.3 to 3.5 years. Forest mice, anoles, rainbow fish party on their birthday once a month
Repro interval
results
summer warm and almost no rain
lots of rain, summer not hot
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
summer warm, winter not very cold
Southeast Asia and islands, always hot and humid
Gestation
Cool summer
Sex
{name} birthday
Upcoming jubilees
Gremllins
mo
Nearctic realm
No results found
North America and Greenland, from tundra to forests
Filters
On the map
summer very hot, dry, lots of grass
Warm or hot summer
Pleasant summer
Female ♀
Palearctic realm
Cold and almost dry
always hot and humid, huge trees and vines
Upcoming birthdays
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.
Winter with snow
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
Height
birth year
lots of grass, few trees, rains occur
rains almost always, very humid
Age (juvenile)
terrestrial habitat, land surface outside water
Age (from birth to death)
sq mm
yr
comfortable summer, +20…+25 °C
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
How similar?
Jubilee = every 10th birthday
Male ♂
until the celebration
Tundra
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?
Tundra
Neither
Earliest developmental stage inside an egg or womb.
Business sausages
Very cold winter and hot summer
Lifespan average
What do they eat?
dry and cold almost all year round
Where do they live?
much snow in winter, cold
early young
forests on land — tropical, temperate, boreal
What do they look like?
Maturity
water often floods the land, lots of grass
emergence (insects)
end of lifespan
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
Temperate mixed forest
end of acceleration
Share
Find a pet...
Mature, fully developed individual capable of reproduction.
very cold, lots of snow and ice
This is me
Warm summer with almost no rain
most of Europe and Asia, various forests, steppes and tundra
very cold winter and very hot summer
Always very wet
Gamers
Pets
How are they built?
Indomalayan realm
Cool summer and lots of rain
Nearctic realm
Temperate steppe
mm
Theoretical lifespan
Indomalayan realm
ml
Stars
Link copied
My age?
wk
My size?
terrestrial
Lots of rain and cool summer
Hot steppe
{name} jubilee
Asexual
swap
cm
Summer from cool to warm
Old-timers
Find an animal or breed...
Southeast Asia and islands, always hot and humid
turns
Rabbits, falcons, red-eared turtles hang out for 6-9 years and party on their birthday four times a year
Rascals
Where do they take shelter?
Denotes a grassland or steppe habitat preference.
Warm summer and lots of rain
terrestrial forest
Flooded grasslands
celebrated their {n} birthday
When you would have been born if you lived as {name}
Daddies
Lifespan maximum
temperate rainforest
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
summer not hot, from +15 to +25 °C
temperate forest
How to care for them?
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
more than 0.35 tons, from 2.5 meters
°C
Not specified
Hermaphrodite ⚥
Where are they found?
North America and Greenland, from tundra to forests
embryo
steppe
summer warm, many oaks, birches, maples
kg
lots of rain, warm and pleasant summer
lots of rain, cool summer, snow in winter
Observations
◉{N} more on tap