Rutwen's Cnemidophorus is a lizard with a long tail from the Teiidae family. It lives only on Margarita Island off the coast of Venezuela.
Rutwen's Cnemidophorus differs from related species by its unique stripe pattern and limited range on one island. It is important to nature as an insect hunter and prey for predators.
Low precipitation in winter
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Immature form that undergoes metamorphosis before adulthood.
Offspring
Worker
Elders
Tail size
small invertebrates
Bro
birth time
Taxons
hot, rains in winter, almost no precipitation 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
Human
birth date
Close
was
days
South and Central America, hot and humid, huge forests
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?
Stripes color
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
surface
adult
Maturity
primary food sources
Neotropical realm
South and Central America, hot and humid, huge forests
teeth
burrow
24 to 38 grams, 10 – 25 centimeters
insects
Potential Habitat
About health
Hot, almost no rain in summer
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
subterranean biotope — in soil, sediments, substrate
island
Repro interval
results
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
terrestrial
Colors
vision
Sex
{name} birthday
Upcoming jubilees
Gremllins
mo
hot, rains in summer, little precipitation in winter
Uses an excavated underground tunnel or chamber for refuge or nesting.
rains are very rare, almost a desert
Always hot
No results found
little precipitation in winter, more in summer
Trophic type
Filters
running
On the map
lunge
all life stages
Female ♀
insectivore
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
tongue
birth year
Maturity
Age (from birth to death)
sq mm
yr
Hot, little precipitation in winter
Wanderers
Food items are collected from exposed outer surfaces of substrates.
How similar?
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?
spiders
small invertebrates without further specification
Very dry
Neither
Earliest developmental stage inside an egg or womb.
Business sausages
from birth to adulthood
Lifespan average
What do they eat?
Where do they live?
Immature individual that has not yet reached reproductive maturity.
Regeneration
early young
Hard dental structures used to bite, tear, or scrape food.
What do they look like?
Maturity
emergence (insects)
end of lifespan
hot, there is a dry season, trees shed their leaves
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
soft or loose substrate — sand, silt, peat
metamorphosis / end of larval stage
end of acceleration
Share
Duration
Find a pet...
Mature, fully developed individual capable of reproduction.
live insects
This is me
Actively hunting and capturing live prey.
Gamers
Pets
How are they built?
mm
Theoretical lifespan
ml
Stars
Link copied
soil and substrate
My age?
wk
My size?
live spiders — arachnids of all sizes
Tropical dry broadleaf forest
Feeding occurs primarily on land or in vegetation.
Legs size
{name} jubilee
Asexual
swap
cm
Old-timers
Find an animal or breed...
active predation
coastal
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?
Tail 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
foraging
°C
Not specified
Hermaphrodite ⚥
Actively searching habitats to locate food items.
Tomato
Where are they found?
Uses the tongue to locate, manipulate, or ingest food items.
Snout vent length size
Primarily detects and locates food using eyesight.
embryo
Length
kg
Rapid forward strike to seize prey.
soft substrate
Observations
◉{N} more on tap