The Mexican black-headed snake is a small snake 20–30 centimeters long with a black head and light body. It lives in dry areas of Mexico and southern USA.
The Mexican black-headed snake is distinguished from other snakes of the genus Tantilla by its black head. It helps regulate the population of insects and centipedes in dry ecosystems and serves as prey for larger animals.
Immature form that undergoes metamorphosis before adulthood.
Worker
birth time
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
centipedes
insects
About health
Searches for food on or among rocks and stony surfaces.
When your next birthday would fall if you lived as {name}
Repro interval
results
Eyes count
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
Trophic type
Filters
Captures or processes food by biting or nipping with the mouth.
summer very hot, dry, lots of grass
Upcoming birthdays
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
leaf
Desert and dry shrubs
16 to 24 grams, 7 – 12 centimeters
Very hot and almost dry
Age (from birth to death)
crevice
rock
Wanderers
Jubilee = every 10th birthday
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
Rapidly swallows prey or food items whole without chewing.
leaf litter
What do they look like?
Maturity
emergence (insects)
end of lifespan
How do they live?
fertilization / egg laying
Produces toxins capable of causing harm when delivered.
How do they behave?
birth / hatching
metamorphosis / end of larval stage
end of acceleration
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Mature, fully developed individual capable of reproduction.
gulping
Actively hunting and capturing live prey.
Pets
Primary oral structure used to seize, manipulate, or ingest food.
Nearctic realm
biting
terrestrial shrubland
Ventral side color
Head count
Hot steppe
Feeding occurs primarily on land or in vegetation.
whole swallow
{name} jubilee
Eyes size
terrestrial shrub habitats — maquis, chaparral, bush
cm
Old-timers
Find an animal or breed...
mouth
desert and semi-desert
turns
Rascals
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
°C
Not specified
Actively searching habitats to locate food items.
Where are they found?
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
Taxons
carnivore
if born as {name}
Foraging takes place among trees and woody vegetation.
age
birth date
Head size
arid terrestrial biotopes with sparse vegetation
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
nocturnal
The basics
climbing
Venomous
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
teeth
burrow
Potential Habitat
lots of grass, few trees, rains are rare
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
{name} birthday
Food is gathered directly from leaf surfaces.
Nearctic realm
No results found
North America and Greenland, from tundra to forests
Eyes color
On the map
lunge
all life stages
Female ♀
Body color
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.
birth year
Maturity
venom
steppe
terrestrial habitat, land surface outside water
sq mm
yr
How similar?
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
Very dry
Neither
Moving up vertical surfaces like trunks or rocks to reach food.
What do they eat?
Where do they live?
early young
Hard dental structures used to bite, tear, or scrape food.
Duration
live insects
This is me
Foraging activity occurs primarily during nighttime hours.
Steppe
Gamers
How are they built?
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
live spiders — arachnids of all sizes
live centipedes and chilopod myriapods
terrestrial
Asexual
swap
active predation
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?
Head color
celebrated their {n} birthday
When you would have been born if you lived as {name}
Daddies
Lifespan maximum
very hot and almost no precipitation
foraging
Hermaphrodite ⚥
Mandarin
North America and Greenland, from tundra to forests
embryo
Length
kg
very hot and dry, rare rains, cacti live
Rapid forward strike to seize prey.
arboreal
Observations
◉{N} more on tap