Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
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
summer mild, +15…+20 °C
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
Marine world
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
Maturity
marine
Temperate sea
Potential Habitat
About health
lake
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
Gestation
Cool summer
Sex
{name} birthday
Upcoming jubilees
Gremllins
mo
Nearctic realm
No results found
North America and Greenland, from tundra to forests
all seas and oceans
Filters
On the map
Small, narrow flowing freshwater course, usually in upland terrain.
Large inland standing freshwater body supporting diverse aquatic and shoreline species.
Female ♀
Palearctic realm
river
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
Non-saline aquatic environments such as rivers and lakes.
birth year
Age (juvenile)
Age (from birth to death)
sq mm
yr
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
Open marine waters beyond the shoreline, encompassing pelagic and neritic zones.
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?
Neither
Business sausages
Lifespan average
What do they eat?
water is almost always cold, there may be ice in winter, not hot in summer
Where do they live?
Marine world
What do they look like?
Maturity
emergence (insects)
end of lifespan
Freshwater
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
end of acceleration
stream
Share
Find a pet...
Freshwater
Cold sea
This is me
Warm summer with almost no rain
most of Europe and Asia, various forests, steppes and tundra
water is cool or warm, cold in winter, comfortable to swim in summer
sea
Gamers
65 to 130 grams, 25 – 60 centimeters
Pets
How are they built?
all rivers and lakes
snow humid cool
Cool summer and lots of rain
Nearctic realm
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
Lots of rain and cool summer
freshwater
Flowing freshwater channel within a defined bed.
{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?
Warm summer and lots of rain
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 ⚥
warm temperate humid cool
Where are they found?
all seas and oceans
North America and Greenland, from tundra to forests
Carrot
all rivers and lakes
Length
kg
Open ocean and sea habitats supporting pelagic and deep-water species.
lots of rain, warm and pleasant summer
lots of rain, cool summer, snow in winter
Observations
◉{N} more on tap