Low precipitation in winter
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
birth time
winter dry and warm
Taxons
hot, rains in winter, almost no precipitation in summer
Heavy rains in summer
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
summer mild, +15…+20 °C
t
When your next jubilee falls in {name} life years
Human
birth date
Palearctic realm
Close
was
days
South and Central America, hot and humid, huge forests
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}
dry, lots of grass, few trees
summer from pleasant to very hot
Neotropical realm
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
very heavy rains in summer, almost no precipitation in winter
adult
Maturity
Neotropical realm
South and Central America, hot and humid, huge forests
Potential Habitat
About health
lots of grass, few trees, rains are rare
Very hot summer
Hot, almost no rain in summer
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
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
Cool summer
Sex
summer very hot, above +25…+30 °C
very hot and almost no rain
{name} birthday
Upcoming jubilees
Gremllins
mo
hot, rains in summer, little precipitation in winter
Nearctic realm
rains are very rare, almost a desert
Always hot
No results found
little precipitation in winter, more in summer
North America and Greenland, from tundra to forests
Filters
On the map
summer very hot, dry, lots of grass
Warm or hot summer
Warm winter with almost no precipitation
Pleasant summer
Female ♀
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.
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
birth year
16 to 24 grams, 7 – 12 centimeters
Very hot and almost dry
terrestrial habitat, land surface outside water
Age (from birth to death)
sq mm
yr
Hot, little precipitation in winter
comfortable summer, +20…+25 °C
most of Europe and Asia, various forests, steppes and tundra
Wanderers
How similar?
Jubilee = every 10th birthday
Male ♂
until the celebration
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?
Very dry
Neither
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
What do they eat?
Where do they live?
Arid steppe
early young
forests on land — tropical, temperate, boreal
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
Very hot and dry
Find a pet...
Mature, fully developed individual capable of reproduction.
This is me
Warm summer with almost no rain
Steppe
Gamers
Pets
How are they built?
Cool summer and lots of rain
Nearctic realm
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
very hot during the day, cold at night, almost no rain
terrestrial
Lots of rain and cool summer
Hot steppe
{name} jubilee
Asexual
swap
cm
Old-timers
Find an animal or breed...
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?
terrestrial forest
celebrated their {n} birthday
When you would have been born if you lived as {name}
very hot all year round, frequent rains, but sometimes dry
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 ⚥
Where are they found?
Mandarin
North America and Greenland, from tundra to forests
embryo
Length
kg
lots of rain, cool summer, snow in winter
Observations
◉{N} more on tap