The Catalina deer mouse is a small rodent that lives only on Santa Catalina Island off the coast of California. It is a rare species from the genus of deer mice.
The Catalina deer mouse differs from related species by its limited range on one island and unique fur coloration. It is important for nature as part of the local food chain and a subject of island evolution studies.
homogamy, reproduction always with fertilization, no alternation of generations
Immature form that undergoes metamorphosis before adulthood.
Worker
Tail size
birth time
Describes the act of excavating soil or substrate to locate or access food.
breeding
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
plants
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
summer warm and almost no rain
Colors
Sex
very hot and almost no rain
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
conifer cones
little precipitation in winter, more in summer
Trophic type
Filters
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
in a burrow
nest on the ground
Desert and dry shrubs
16 to 24 grams, 7 – 12 centimeters
young are born live on land, not hatched from eggs or roe
Very hot and almost dry
Age (juvenile)
Age (from birth to death)
cones of coniferous trees with seeds
rock
Hot, little precipitation in winter
Age (embryo)
Wanderers
Food items are collected from exposed outer surfaces of substrates.
Jubilee = every 10th birthday
berries
Ears size
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
dry grass
gathering from the surface
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.
nest hidden in an underground burrow
Actively hunting and capturing live prey.
digging
Pets
Primary oral structure used to seize, manipulate, or ingest food.
Nearctic realm
juicy berries — bilberry, rowan, rosehip
terrestrial shrubland
Feeding occurs primarily on land or in vegetation.
{name} jubilee
paw
terrestrial shrub habitats — maquis, chaparral, bush
cm
Old-timers
Find an animal or breed...
mouth
desert and semi-desert
turns
Rascals
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
Actively searching habitats to locate food items.
Where are they found?
Describes food handling or digging performed with the forelimbs.
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
normal sexual
Taxons
if born as {name}
Forages within or on the surface of soil or substrate.
Foraging takes place among trees and woody vegetation.
omnivore
age
birth date
arid terrestrial biotopes with sparse vegetation
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
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
Insects
surface
primary food sources
teeth
burrow
Potential Habitat
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
Gestation
land
{name} birthday
Food is gathered directly from leaf surfaces.
Nearctic realm
soil
Always hot
No results found
North America and Greenland, from tundra to forests
underground
Eyes color
islands
On the map
all life stages
Female ♀
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
protection from sun
How similar?
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
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?
Where do they live?
Immature individual that has not yet reached reproductive maturity.
Ears color
green plants
early young
Hard dental structures used to bite, tear, or scrape food.
berries
branch
Very hot and dry
Duration
live insects
This is me
Warm summer with almost no rain
Foraging activity occurs primarily during nighttime hours.
Gamers
How are they built?
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
very hot during the day, cold at night, almost no rain
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?
inhabit and develop on land, outside water bodies
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
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
arboreal
Observations
◉{N} more on tap