Achalinus werneri is a small non-venomous snake that lives only on the Amami Islands in Japan. It hides in the forest litter, leads a nocturnal lifestyle, and feeds on worms.
This snake differs from related species by very small eyes and rough keeled scales. It is important for Amami forests because it regulates the population of invertebrates and serves as food for larger animals.
Searches for prey at night and swallows it whole.
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Tropical moist forest
Worker
Elders
Foraging among accumulated fallen leaves on the forest floor.
Bro
birth time
Taxons
carnivore
if born as {name}
Forages within or on the surface of soil or substrate.
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
t
When your next jubilee falls in {name} life years
Human
birth date
Head size
no permanent shelter
Palearctic realm
Close
was
days
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Warm summer
nocturnal
The basics
How old you would be if you lived as {name}
summer from pleasant to very hot
climbing
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
adult
Maturity
primary food sources
Potential Habitat
About health
Warm or hot summer and rains
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
Repro interval
results
earthworms
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
terrestrial
summer warm, winter not very cold
islands and part of Australia, many unusual animals and plants
Colors
live naked terrestrial slugs
Sex
{name} birthday
Upcoming jubilees
Gremllins
mo
soil
No results found
Trophic type
Filters
Eyes color
On the map
Warm or hot summer
all life stages
Female ♀
Palearctic realm
Body color
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
Maturity
rains almost always, very humid
lots of rain, summer from warm to very hot
invertebrate
terrestrial habitat, land surface outside water
sq mm
yr
woodland
most of Europe and Asia, various forests, steppes and tundra
Wanderers
How similar?
world of Australasia
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
Earliest developmental stage inside an egg or womb.
Business sausages
Moving up vertical surfaces like trunks or rocks to reach food.
from birth to adulthood
Lifespan average
What do they eat?
Where do they live?
Rapidly swallows prey or food items whole without chewing.
Immature individual that has not yet reached reproductive maturity.
leaf litter
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
Duration
Find a pet...
Mature, fully developed individual capable of reproduction.
gulping
This is me
most of Europe and Asia, various forests, steppes and tundra
Foraging activity occurs primarily during nighttime hours.
Actively hunting and capturing live prey.
Always very wet
Gamers
65 to 130 grams, 25 – 60 centimeters
Pets
How are they built?
slugs
Primary oral structure used to seize, manipulate, or ingest food.
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
terrestrial
Feeding occurs primarily on land or in vegetation.
whole swallow
{name} jubilee
Eyes size
Asexual
swap
cm
Old-timers
Find an animal or breed...
active predation
mouth
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
terrestrial forest
Head color
celebrated their {n} birthday
When you would have been born if you lived as {name}
Litter size
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?
earthworms and soil oligochaetes
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
foraging
°C
Not specified
Hermaphrodite ⚥
Actively searching habitats to locate food items.
Where are they found?
Species lacks any fixed or lasting shelter structure.
embryo
Carrot
Searches for prey at night and swallows it whole.
Length
kg
lots of rain, warm and pleasant summer
Observations
◉{N} more on tap