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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.
Worker
Elders
Bro
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
g
age
t
When your next jubilee falls in {name} life years
Human
birth date
Palearctic realm
Close
was
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}
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
young after transformation
adult
Potential Habitat
About health
When your next birthday would fall if you lived as {name}
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
results
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
summer warm, winter not very cold
Sex
{name} birthday
Upcoming jubilees
Gremllins
mo
No results found
Filters
On the map
Pleasant summer
Female ♀
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.
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
birth year
rains almost always, very humid
Age (juvenile)
Age (pupa)
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
Age (baby / nestling)
Wanderers
Age (larva)
How similar?
Jubilee = every 10th birthday
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
Earliest developmental stage inside an egg or womb.
Business sausages
from birth to adulthood
Young offspring still dependent on parental care.
Lifespan average
What do they eat?
Where do they live?
Immature individual that has not yet reached reproductive maturity.
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
Duration
Find a pet...
Mature, fully developed individual capable of reproduction.
This is me
Always very wet
Gamers
Pets
How are they built?
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
terrestrial
Taiga
{name} jubilee
Asexual
swap
cm
Old-timers
Find an animal or breed...
Wingspan
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?
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
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?
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
°C
Not specified
Hermaphrodite ⚥
Grape
Where are they found?
8 to 11 grams, 1.5 – 8 centimeters
embryo
summer warm, many oaks, birches, maples
Length
kg
lots of rain, warm and pleasant summer
Observations
◉{N} more on tap