The black rat is a small rodent with dark fur and a long tail. It climbs well and often settles in houses, on ships, and in the upper parts of buildings.
The black rat differs from the gray rat by its longer tail, smaller body size, and love for heights. It plays a role in nature as a seed disperser and food for predators, but also carries dangerous diseases.
homogamy, reproduction always with fertilization, no alternation of generations
Whiskers count
Worker
waste
Tail size
birth time
breeding
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
hot Africa south of the desert, many savannas and forests
detritus, eat dead remains of plants, animals and all kinds of organic debris on the bottom
days
South and Central America, hot and humid, huge forests
Warm summer
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.
whiskers
adult
Maturity
organic debris
South and Central America, hot and humid, huge forests
plants
insects
About health
milk
anything
When your next birthday would fall if you lived as {name}
Repro interval
results
Eyes count
summer warm, winter not very cold
Southeast Asia and islands, always hot and humid
Colors
Sex
Upcoming jubilees
Gremllins
mo
rags
Trophic type
Filters
Palearctic realm
Mediterranean forest
Upcoming birthdays
Breeding structure built or used for laying eggs and raising offspring.
in bushes or on a tree
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
leaf
Height
nest on the ground
rains almost always, very humid
young are born live on land, not hatched from eggs or roe
Age (juvenile)
Age (from birth to death)
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
Food items are collected from exposed outer surfaces of substrates.
world of Australasia
Jubilee = every 10th birthday
Warm summer and frequent rains
Ears size
Earliest developmental stage inside an egg or womb.
Business sausages
fruits
Lifespan average
nest located directly on the ground surface on land, only the mother provides parental care for the offspring
in a terrestrial nest
Whiskers size
live birth
summer warm, rains frequent
leaf litter
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.
65 to 130 grams, 25 – 60 centimeters
Pets
Indomalayan realm
Nearctic realm
Indomalayan realm
terrestrial shrubland
Feeding occurs primarily on land or in vegetation.
lateral line
{name} jubilee
Eyes size
terrestrial shrub habitats — maquis, chaparral, bush
cm
Old-timers
Find an animal or breed...
turns
islands and part of Australia, many unusual animals and plants
Rascals
terrestrial forest
terrestrial grassland and steppe
fruits
Tail color
olfaction
Flooded grasslands
drink mother's milk in childhood
hot Africa south of the desert, many savannas and forests
Ears count
seeds
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
Actively searching habitats to locate food items.
Where are they found?
steppe
Whiskers color
Summer almost without rain
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
Foraging among accumulated fallen leaves on the forest floor.
Bro
small vertebrates without specifying the group
normal sexual
Taxons
seeds, berries, fruits
almost no rain in summer, more precipitation in winter
if born as {name}
Foraging takes place among trees and woody vegetation.
omnivore
vegetables
age
birth date
Palearctic realm
rest
Fur color
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
nocturnal
The basics
herbivory, feed only on plant food
climbing
Neotropical realm
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
surface
primary food sources
Neotropical realm
teeth
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
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
terrestrial
gnaws and collects
Plants
Gestation
Body size
islands and part of Australia, many unusual animals and plants
land
summer very hot, above +25…+30 °C
{name} birthday
Food is gathered directly from leaf surfaces.
Nearctic realm
grass
Always hot
No results found
North America and Greenland, from tundra to forests
branches
Eyes color
omnivory, they eat plants, animals, and mushrooms — almost any food
On the map
grain products
Pleasant summer
Female ♀
all life stages
dry and hot summer, warm and rainy winter
Body color
world of Afrotropics
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.
warm temperate humid
birth year
lots of grass, few trees, rains occur
Shelter used specifically for reproduction or nesting.
Maturity
terrestrial habitat, land surface outside water
sq mm
yr
comfortable summer, +20…+25 °C
protection from sun
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
Moving up vertical surfaces like trunks or rocks to reach food.
from birth to adulthood
Young offspring still dependent on parental care.
nest
caring mother
What do they eat?
Where do they live?
Immature individual that has not yet reached reproductive maturity.
Ears color
Hard dental structures used to bite, tear, or scrape food.
forests on land — tropical, temperate, boreal
water often floods the land, lots of grass
world of Afrotropics
small vertebrates
Temperate mixed forest
nest high on shrub or tree branches
Duration
live insects
This is me
most of Europe and Asia, various forests, steppes and tundra
Foraging activity occurs primarily during nighttime hours.
small vertebrates
Always very wet
Gamers
How are they built?
Temperate steppe
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
terrestrial
Asexual
swap
Southeast Asia and islands, always hot and humid
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?
Denotes a grassland or steppe habitat preference.
Warm summer and lots of rain
Sensory system detecting water movements to locate prey.
inhabit and develop on land, outside water bodies
paper
celebrated their {n} birthday
open grassy spaces — steppes, savannas, prairies
When you would have been born if you lived as {name}
very hot all year round, frequent rains, but sometimes dry
Daddies
Lifespan maximum
world of Australasia
foraging
Hermaphrodite ⚥
North America and Greenland, from tundra to forests
embryo
Carrot
summer warm, many oaks, birches, maples
plant seeds — sunflower, grass, small wild seeds
Length
kg
lots of rain, warm and pleasant summer
arboreal
Observations
◉{N} more on tap