The little bilby, or yallara, is a small marsupial mammal with long ears that used to live in the deserts of Australia. Unfortunately, this species is considered fully extinct since the mid-20th century.
The little bilby differed from the greater bilby in its smaller size, longer ears, and thin tail. It helped desert nature by eating harmful insects and dispersing plant seeds. The species disappeared due to the introduction of cats, foxes, and changes in habitats.
homogamy, reproduction always with fertilization, no alternation of generations
Worker
Tail size
birth time
Describes the act of excavating soil or substrate to locate or access food.
breeding
Hot and almost no precipitation
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
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.
adult
Maturity
insects
About health
When your next birthday would fall if you lived as {name}
Repro interval
results
Colors
Sex
very hot and almost no rain
Upcoming jubilees
Gremllins
mo
Uses an excavated underground tunnel or chamber for refuge or nesting.
rains are very rare, almost a desert
conifer cones
Trophic type
Filters
Tail count
roots of plants
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
tongue
nest on the ground
Desert and dry shrubs
Very hot and almost dry
insect larvae and caterpillars
Age (from birth to death)
cones of coniferous trees with seeds
Wanderers
world of Australasia
Jubilee = every 10th birthday
Ears size
Earliest developmental stage inside an egg or womb.
Business sausages
roots
Lifespan average
nest located directly on the ground surface on land, only the mother provides parental care for the offspring
in a terrestrial nest
What do they look like?
Maturity
emergence (insects)
in the pouch or mouth
end of lifespan
How do they live?
fertilization / egg laying
termites
How do they behave?
birth / hatching
metamorphosis / end of larval stage
end of acceleration
Share
seeds
Find a pet...
Mature, fully developed individual capable of reproduction.
Pouch count
digging
Pets
Feeding occurs primarily on land or in vegetation.
{name} jubilee
paw
Claws count
cm
Old-timers
Find an animal or breed...
desert and semi-desert
Claws size
turns
islands and part of Australia, many unusual animals and plants
Rascals
Tail color
Ears count
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?
desert
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
°C
Not specified
with mother
Where are they found?
larvae
Describes food handling or digging performed with the forelimbs.
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Elders
Bro
normal sexual
Taxons
if born as {name}
omnivore
age
birth date
arid terrestrial biotopes with sparse vegetation
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?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
primary food sources
burrow
Potential Habitat
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
from 130 grams to 0.5 kilograms, 0.35 – 0.8 meters
islands and part of Australia, many unusual animals and plants
land
{name} birthday
No results found
On the map
fry develop in the pouch or mouth of a parent on land
Female ♀
all life stages
nest located directly on the ground surface on land
termites
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.
desert
birth year
Shelter used specifically for reproduction or nesting.
Maturity
terrestrial habitat, land surface outside water
sq mm
yr
Snout size
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?
Very dry
Neither
Young offspring still dependent on parental care.
caring mother
What do they eat?
insect larvae
Where do they live?
Ears color
snout
Very hot and dry
Duration
live insects
This is me
Gamers
the mother carries the baby in a pouch or mouth on land
How are they built?
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
very hot during the day, cold at night, almost no rain
terrestrial
Asexual
swap
roots and plant tubers
live termites
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?
inhabit and develop on land, outside water bodies
digs the soil with a long snout and front paws
celebrated their {n} birthday
When you would have been born if you lived as {name}
Daddies
Lifespan maximum
world of Australasia
very hot and almost no precipitation
Hermaphrodite ⚥
Uses the tongue to locate, manipulate, or ingest food items.
embryo
Zucchini
Length
kg
very hot and dry, rare rains, cacti live
Observations
◉{N} more on tap