The red-tailed viper is a long arboreal snake of bright green color with a red tail. It lives in the canopies of trees in the tropical forests of Southeast Asia and hunts small animals.
The red-tailed viper is distinguished by its bright green body coloration and red tail, which help it hide among the leaves. It is important for forest nature because it regulates the population of rodents and other small animals.
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Tropical moist forest
Worker
Elders
Bro
birth time
ambush
Taxons
carnivore
Heavy rains in summer
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
t
When your next jubilee falls in {name} life years
Predator remains still and concealed before launching a sudden attack.
Human
birth date
small mammals — mice, shrews, bats
no permanent shelter
Close
very hot and very humid all year round, rain almost every day
was
days
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
The basics
How old you would be if you lived as {name}
Neotropical realm
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
very heavy rains in summer, almost no precipitation in winter
adult
Maturity
Nightstand
forest canopy
primary food sources
South and Central America, hot and humid, huge forests
Potential Habitat
About health
When your next birthday would fall if you lived as {name}
d
rodents in general — rats, squirrels, ground squirrels
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
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Southeast Asia and islands, always hot and humid
islands and part of Australia, many unusual animals and plants
small mammals
Colors
Sex
{name} birthday
Upcoming jubilees
Gremllins
mo
Always hot
No results found
Hot with heavy summer rains
Trophic type
Filters
Eyes color
live birds
On the map
all life stages
Female ♀
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
terrestrial habitat, land surface outside water
Age (from birth to death)
sq mm
yr
Wanderers
constriction
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
from birth to adulthood
Scales count
Lifespan average
What do they eat?
Where do they live?
Immature individual that has not yet reached reproductive maturity.
forests on land — tropical, temperate, boreal
What do they look like?
Maturity
rodents
emergence (insects)
end of lifespan
birds
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
end of acceleration
Share
6 to 47 kilograms, 0.9 – 2.5 meters
Duration
Find a pet...
Mature, fully developed individual capable of reproduction.
Wraps body around prey to immobilise or suffocate before swallowing.
Always hot and wet
This is me
Always very wet
Gamers
hot, heavy rains in summer, little precipitation in winter
Pets
How are they built?
Indomalayan realm
live lizards
mm
Theoretical lifespan
Indomalayan realm
ml
Stars
Link copied
My age?
wk
My size?
terrestrial
Scales color
{name} jubilee
Eyes size
Asexual
swap
cm
Old-timers
Find an animal or breed...
Southeast Asia and islands, always hot and humid
lizards
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?
terrestrial forest
Tail color
Head color
celebrated their {n} birthday
When you would have been born if you lived as {name}
very hot all year round, frequent rains, but sometimes dry
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?
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
°C
Not specified
Hermaphrodite ⚥
Where are they found?
Species lacks any fixed or lasting shelter structure.
embryo
Length
kg
Observations
◉{N} more on tap