1769605
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zacatecan-deer-mouse-1769605
en
rock mouse
Peromyscus difficilis
The Southern Rock Mouse is a small rodent with a long tail and large ears. It lives among rocks and cliffs in central Mexico and climbs vertical surfaces well.
The Southern Rock Mouse differs from other deer mouse species by its love for rocky places and its ability to climb well. It disperses plant seeds and serves as important prey for snakes, birds, and small predators.
forages for food on the soil surface and among rocks
trophic:omnivore
feeding_timing:nocturnal
#879593
2027.1375261247158
3378.562543541193
1004.4375
1300.9860105116256
180.0
250.0
20.0
40.0
The mouse changes its fur twice a year — in spring and autumn. This helps it adapt better to temperature changes.
-1
-1
homogamy, reproduction always with fertilization, no alternation of generations
Worker
Tail size
Were {name} like {animal}, then:
birth time
Describes the act of excavating soil or substrate to locate or access food.
breeding
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
South and Central America, hot and humid, huge forests
Warm summer
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
South and Central America, hot and humid, huge forests
plants
insects
About health
cool, lots of coniferous trees, snow in winter
Searches for food on or among rocks and stony surfaces.
When your next birthday would fall if you lived as {name}
Repro interval
results
protection from predators
summer warm, winter not very cold
Colors
Sex
Upcoming jubilees
Gremllins
mo
rains are very rare, almost a desert
conifer cones
little precipitation in winter, more in summer
alpine meadows and arctic tundra on land
Trophic type
Filters
Warm winter with almost no precipitation
den
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
leaf
Seeds
nest on the ground
Desert and dry shrubs
rains almost always, very humid
young are born live on land, not hatched from eggs or roe
Age (juvenile)
Age (from birth to death)
cones of coniferous trees with seeds
rock
Age (embryo)
Wanderers
Food items are collected from exposed outer surfaces of substrates.
Jubilee = every 10th birthday
dry, cold winter, lots of grass, few trees
Ears size
Tropical coniferous forest
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
nest located directly on the ground surface on land, only the mother provides parental care for the offspring
in a terrestrial nest
young after fast growth
Whiskers size
Juvenile stage following larval metamorphosis but not yet adult.
live birth
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
seeds
Find a pet...
Mature, fully developed individual capable of reproduction.
Actively hunting and capturing live prey.
digging
Pets
Primary oral structure used to seize, manipulate, or ingest food.
Indomalayan realm
small fruits
Feeding occurs primarily on land or in vegetation.
{name} jubilee
paw
cm
Temperate coniferous forest
Old-timers
Find an animal or breed...
mouth
turns
Rascals
terrestrial forest
Tail color
Forages on tree limbs or woody stems within vegetation.
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
alpine and arctic tundra
Actively searching habitats to locate food items.
Where are they found?
38 to 65 grams, 15 – 40 centimeters
Describes food handling or digging performed with the forelimbs.
Whiskers color
Low precipitation in winter
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Elders
Bro
winter dry and warm
normal sexual
Taxons
if born as {name}
Forages within or on the surface of soil or substrate.
small fruits and berries, too small for precise identification
Foraging takes place among trees and woody vegetation.
omnivore
age
birth date
rest
Fur color
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
nocturnal
The basics
herbivory, feed only on plant food
climbing
Neotropical realm
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
Insects
surface
forages for food on the soil surface and among rocks
primary food sources
Neotropical realm
teeth
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
cold winter, lots of coniferous trees: spruce, pine
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
terrestrial
Gestation
land
{name} birthday
Food is gathered directly from leaf surfaces.
Nearctic realm
soil
No results found
North America and Greenland, from tundra to forests
underground
Eyes color
On the map
Pleasant summer
all life stages
Female ♀
Cold and almost dry
nest located directly on the ground surface on land
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
Shelter used specifically for reproduction or nesting.
Maturity
Skin color
terrestrial habitat, land surface outside water
sq mm
yr
comfortable summer, +20…+25 °C
How similar?
hot, many coniferous trees, often in mountains
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
small fruits
What if eaten?
Very dry
Neither
Moving up vertical surfaces like trunks or rocks to reach food.
from birth to adulthood
Young offspring still dependent on parental care.
caring mother
What do they eat?
dry and cold almost all year round
Where do they live?
Immature individual that has not yet reached reproductive maturity.
mountains
Ears color
green plants
Hard dental structures used to bite, tear, or scrape food.
forests on land — tropical, temperate, boreal
branch
Duration
live insects
This is me
rocky
Foraging activity occurs primarily during nighttime hours.
Steppe
Always very wet
Gamers
How are they built?
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
terrestrial
Taiga
Asexual
swap
Southeast Asia and islands, always hot and humid
active predation
Who among us will transform as if by magic and become like {animal}?
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?
Warm summer and lots of rain
inhabit and develop on land, outside water bodies
celebrated their {n} birthday
When you would have been born if you lived as {name}
Cold steppe
Body fur color
Daddies
Lifespan maximum
foraging
Hermaphrodite ⚥
embryo
Orange
Denotes a mountainous habitat preference.
Length
kg
very hot and dry, rare rains, cacti live
lots of rain, warm and pleasant summer
arboreal
Observations
◉{N} more on tap
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