David's deer is a large deer from China with a long tail and horns of unusual shape. The species almost disappeared in the wild but was saved in reserves and is now bred by humans.
David's deer differs from other deer with its very long tail and horns that grow backwards. It is important for nature because it helps preserve wet meadows and has become an example of successful reintroduction of a species from captivity to the wild.
Antlers color
homogamy, reproduction always with fertilization, no alternation of generations
Immature form that undergoes metamorphosis before adulthood.
Worker
Tail size
birth time
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
t
When your next jubilee falls in {name} life years
Human
days
Warm summer
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
Maturity
About health
Warm or hot summer and rains
milk
When your next birthday would fall if you lived as {name}
Motorcycle
Repro interval
results
protection from predators
summer warm, winter not very cold
Colors
Sex
Upcoming jubilees
Gremllins
mo
Trophic type
Filters
Warm or hot summer
Tail count
Palearctic realm
leaves
grass
Upcoming birthdays
eggs, roe or offspring develop in a nest built on the ground or close to it
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
nest on the ground
rains almost always, very humid
young are born live on land, not hatched from eggs or roe
aquatic plants
Age (juvenile)
Age (from birth to death)
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
algae
Hooves count
Jubilee = every 10th birthday
Warm summer and frequent rains
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
nest located directly on the ground surface on land, only the mother provides parental care for the offspring
in a terrestrial nest
leaves
Regeneration
live birth
summer warm, rains frequent
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
Find a pet...
Mature, fully developed individual capable of reproduction.
Pets
Lots of rain and cool summer
{name} jubilee
cm
Old-timers
Find an animal or breed...
turns
Rascals
terrestrial forest
terrestrial grassland and steppe
Tail color
Flooded grasslands
drink mother's milk in childhood
reed
Litter size
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
grazing
°C
Not specified
Where are they found?
Species lacks any fixed or lasting shelter structure.
Antlers count
herbivore
lots of rain, cool summer, snow in winter
Feeds by cropping or nibbling low-growing vegetation or algae.
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Elders
leaves and stems of grasses and other herbaceous vegetation
Bro
normal sexual
Taxons
if born as {name}
age
birth date
no permanent shelter
Palearctic realm
tearing
rest
Fur color
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
My weight?
74 to 150 kilograms, 1.4 – 3 meters
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
primary food sources
after transformation until death
Potential Habitat
Very hot summer
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
Mass
young shoots and leaves of plants
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Plants
Gestation
Rips or shreds food using teeth, beak or claws.
land
summer very hot, above +25…+30 °C
{name} birthday
grass
No results found
On the map
all life stages
Female ♀
nest located directly on the ground surface on land
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.
birth year
Maturity
lots of rain, summer from warm to very hot
terrestrial habitat, land surface outside water
sq mm
yr
Hooves color
How similar?
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
from birth to adulthood
Young offspring still dependent on parental care.
caring mother
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
water often floods the land, lots of grass
Temperate mixed forest
Duration
This is me
most of Europe and Asia, various forests, steppes and tundra
Always very wet
Gamers
aquatic plants and algae
How are they built?
Hooves size
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
sedge, reed and other coastal herbaceous plants
terrestrial
Antlers size
Asexual
swap
nips and tears off plants
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?
Warm summer and lots of rain
inhabit and develop on land, outside water bodies
sedge and reeds
celebrated their {n} birthday
open grassy spaces — steppes, savannas, prairies
When you would have been born if you lived as {name}
Daddies
Lifespan maximum
Hermaphrodite ⚥
embryo
summer warm, many oaks, birches, maples
Length
kg
lots of rain, warm and pleasant summer
Observations
◉{N} more on tap