Can I keep it?

Check your setup against this sheet

Setup

The numbers

Thermal gradient

152025303540 °C
22–26°Cool side
28–30°Warm side

A real gradient, 28–30°C warm against 22–26°C cool, so the animal chooses. The sheet states no separate night figure.

Why

Same scale on every sheet here, so two species compare by eye.

The sheet stateswarm 28-30 °C (80-86 °F) / cool 22-26 °C (72-80 °F) / night No heat needed unless < 15 °C

Humidity

40–50%Target RH
60% during shed

The sheet states40-50% (60-70% during shed)

UVB

Optionalbeneficial

The sheet statesOptional; low-level beneficial

Narrower than the page we cite. The source we cite, read on 10 Aug 2026, gives a wider range than the one above. The narrowing is ours and nobody here has written down why. reptilesandresearch.org

14:00
Day

Drag the sun. Corn Snake is Crepuscular, so what it is doing changes with the light.

Enclosure and conditions

Enclosure

substrate28–30 °Cwarm hidecool hidewater40–50 % RHUVB tube120 cm60 cm
warm sidewarm hidecool hidewatersubstrateUVB tube
50100150200 cm
120 × 60 × 60 cmWidth × depth × height
72dm² of floor

Drawn from the stated numbers. Only what the sheet states is drawn inside.

Why

The rectangle carries the exact width-to-height ratio of the figures above it, and the ruler under it places that width on the 0–250 cm scale every sheet here shares, so two species still compare at a glance. Nothing is added that the sheet does not name: a lamp drawn on a sheet that never mentions one would be invented equipment. What the sheet leaves out is listed rather than left blank, because an empty tank reads as « none needed ».

The sheet states120 × 60 × 60 cm for an adult

UVB
Optional; low-level beneficial
Substrate
Aspen, coco husk; escape-proof lid a must
Hides
2 hides + climbing branches
Water
Medium bowl, fresh daily

What your climate adds

This sheet states a range to hold. Your local climate decides how much work holding it is. Pick the nearest city: nothing is sent anywhere, the choice stays in this browser.

What it needs

Enclosure at least 120 × 60 × 60 cmbecause Enclosure — 120 × 60 × 60 cm for an adult
A heat sourcebecause Temperature — warm 28-30 °C (80-86 °F) / cool 22-26 °C (72-80 °F) / night No heat needed unless < 15 °C
A thermostat to regulate itbecause Temperature — warm 28-30 °C (80-86 °F) / cool 22-26 °C (72-80 °F) / night No heat needed unless < 15 °C
A thermometerbecause Temperature — warm 28-30 °C (80-86 °F) / cool 22-26 °C (72-80 °F) / night No heat needed unless < 15 °C
A hygrometerbecause Humidity — 40–50% (60–70% during shed)
UVB, stated as beneficial rather than requiredbecause UVB — Optional; low-level beneficial

Every line above is deduced from a value this sheet states, and names which one. Nothing here is a general recommendation.

  • Enclosure 120×60×60
  • Thermostat
  • Heat mat/DHP
  • 2 hides + branches
  • Aspen substrate
  • Water bowl
  • Hygrometer/thermometer
  • F/T mice

Food

Diet

Feeding rhythm

Juvenile
every 5–7 d
Adult
every 10–14 d
2Meals in 28 days · adult

Twenty-eight days, one row. Each band is a meal window. This sheet states a figure for each age, so each age has its row.

Why

The windows widen as they go because the interval is a range: four meals after a 10–14 day cycle land anywhere between day 40 and day 56. A young animal's row is drawn only where the sheet gives one: working it out by dividing the adult interval would be inventing a ration.

The sheet statesRodents (mice → small rats) · Every 10–14 days

Staple
Rodents (mice → small rats)
Prey size
≈ widest part of the body (or ~10% body weight)
Method
Frozen-thawed preferred
Hatchlings
Every 5–7 days (pinkies)
Adults
Every 10–14 days
Supplements
None needed
Fasting
Reduced appetite in cool season is normal

Daily life

Behaviour and handling

HandlingExcellent first snake; tolerant & curious
EscapeNotorious escape artist: secure the lid
CohabitationHouse individually
DefenseMay rattle tail / musk; bites minor & rare
ChildrenGreat with supervision

Health

Common health problems

Respiratory infection
Signswheezing, mucus, open-mouth breathing
Preventavoid cold/damp; correct gradient
Mites
Signsblack dots, excess soaking
Preventquarantine new snakes
Retained shed
Signsstuck skin / eye caps
Preventraise humidity during shed + humid hide
Obesity
Signsfrom overfeeding
Preventcorrect prey size & interval

When to see a vet

This is not veterinary advice. If red flags appear, consult a qualified exotic (herp) veterinarian. Quarantine new arrivals 30–90 days.

Red flags

  • open-mouth breathing
  • months of weight loss
  • stargazing
  • persistent regurgitation

The species

Identity

Adult size

True scale, against a 1.75 m person

1.75 m120–150 cm

Logarithmic, the same axis on every sheet

1520100400 cm
120–150 cmNose to tail, adult

The size the sheet states for a grown animal.

Why

Two drawings, because they answer two questions. The silhouette is at true scale against a 1.75 m person: it says how big this animal actually is, which no number does for someone who has never seen one. The bar under it is logarithmic and shared by every sheet here, so a 2 cm isopod and a 4 m python both stay readable on the same axis and two species can be compared at a glance.

Family / Order
Colubridae / Squamata
Distribution
New Jersey to Florida; fields, farms, pine forest
Adult size
120–150 cm
Lifespan (captivity)
15–20 yrs (up to ~30)
Activity
Crepuscular; semi-terrestrial
Temperament
Docile, active, very forgiving

Morphs

21 morphs, with how each one is inherited. 1 of them carry a documented welfare cost, and those come first.

Caution1effect reported in some lines only
ScalelessRecessiveNo scales → sensitive skin/hydration; smooth decor, clean substrateSuper form: —Caution
No known risk20colour and pattern only
Amelanistic (Amel)RecessiveRed albinoSuper form: —
Anerythristic ARecessiveNo redSuper form: —
Blizzard (Amel+Charcoal)comboSuper form: —
Bloodred / DiffusedRecessiveSuper form: —
Butter (Amel+Caramel)comboSuper form: —
CaramelRecessiveSuper form: —
Charcoal (Anery B)RecessiveSuper form: —
DiluteRecessiveSuper form: —
Fire (Amel+Bloodred)comboSuper form: —
Ghost (Hypo+Anery)comboSuper form: —
HypomelanisticRecessiveSuper form: —
LavenderRecessiveSuper form: —
MotleyRecessivePatternSuper form: —
Opal (Amel+Lavender)comboSuper form: —
PalmettoRecessiveWhite with specklesSuper form: —
Snow (Amel+Anery)comboSuper form: —
StripeRecessiveSuper form: —
SunkissedRecessiveSuper form: —
TesseraDominantDominant patternSuper form: —
Ultra / UltramelCo-dominantAmel allelicSuper form: —

How common this animal is

27/100Search interest as a pet

Relative Google search interest for the species as a pet, 2020. The scale is relative within the study: 100 is the most searched reptile it measured, not a count of animals. Reptiles only, and only the species the study measured. An absent value means the study did not measure that species, not that nobody keeps it.

Valdez JW (2021), Using Google Trends to Determine Current, Past, and Future Trends in the Reptile Pet Trade, Animals 11(3):676

4,913Live individuals in declared US trade filings

NOT a measure of how many are kept. These filings count animals shipped for any purpose, including the food trade and laboratory supply, and they are United States records only. The three largest volumes in the source belong to a food frog, a bait species and the standard laboratory amphibian.

US Fish and Wildlife Service LEMIS declared wildlife import and export records, as compiled in the received dataset

Reproduction

Life course

Day 0Hatch
1.5–3 yrSexual maturity
15–20 yrLifespan in care
55–65 dIncubation
10–30Clutch
15 yrMinimum commitment
~12 yrReproductive window

Read from the lifespan and maturity the sheet states, for animals in care and not in the wild.

Why

The minimum commitment is the low end of that lifespan, and the reproductive window is what is left after maturity: both are subtractions on stated figures, not figures of their own. The sheet also reports a record of about 30 years; that is a reported maximum, not the range to plan for.

Sexual maturity
18–36 months (size over age)
Sexing
Probing / popping
Clutch
10–30 eggs
Incubation
~55–65 days at 27–28 °C
Breeding trigger
2–3 month cool brumation ~13–15 °C

Good to know

  • Named for the maize-like belly pattern (and for hunting rodents in corn stores).
  • The reptile hobby's #1 beginner snake, with hundreds of color morphs.
  • Harmless to humans and a natural rodent-control ally for farmers.
Semi-terrestrial · warm · dryFrom the sheet: warm end 28–30°C, humidity 40–50%

The way of life is written in this sheet, word for word. The climate words summarise the two figures above them, they do not add to them.

National law is not global, and we hold no national wildlife law for any country, Thailand included. Check your own authority before buying or selling.

Questions & sources

Common questions

Is it venomous?

No: completely harmless.

Will it escape?

Yes if the lid isn't secured: they're escape experts.

Good for a child's first snake?

One of the best choices.

Going deeper

Research dossier: read at the source, not yet cross-checked by our team. Every figure links to the page it was read on.

In the wild

Wild ecology

Kentucky field study

Captures
101
Capture method signal
77% under artificial cover in the study
Sex meristics
Males had higher subcaudal counts; females higher ventral counts.
Juvenile detection gap
Few 30-70 cm SVL animals detected; authors caution this may reflect detection/habitat differences rather than true recruitment.

Peak activity

  • April-May
  • August-September

Peer reviewed field natural historyjournals.ku.edu

Habitat synthesis

Habitats

  • forest
  • semi-desert
  • grassland
  • urban areas

Veterinary referenceonlinelibrary.wiley.com

Development

Maturity context
Secondary academic summary reports full length shortly after sexual maturity around ~2 years, with growth strongly influenced by food availability.

Academic secondaryanimaldiversity.org

Natural diet

Captive rule
Whole rodents can remain the practical staple; wild prey diversity does not require unnecessary exotic feeder upsells.

Wild summary

Mammals
More than half of diet reported as rodents/mammal prey in ADW synthesis.
Regional variation
Florida populations are described as consuming more reptiles/amphibians, potentially contributing to smaller body size.
Hunting
Can climb trees/shrubs for prey and use rodent burrows.

Other prey

  • birds
  • bird eggs
  • amphibians
  • reptiles
  • occasional conspecific prey

Academic secondary with referencesanimaldiversity.org

Growth and body condition

Body condition

Scoring study

N
22
Scale
1-5 in 0.5 steps
Ideal score
2.5
Observed bcs range
1.5-3.5
Median weight g
309
Median total length cm
123
Median svl cm
104
Finding
BCS correlated positively with a mass-length body condition index.

Weight range g

75-967

Total length range cm

79-153

Palpation sites

  • spine
  • area between spinous/transverse processes
  • ribs
  • neck

Peer reviewed veterinarypubmed.ncbi.nlm.nih.gov

Health and welfare

Health and biosecurity

Cryptosporidiosis case

Finding
Corn snakes can develop serious gastrointestinal disease including gastric intussusception associated with cryptosporidiosis.

Veterinary case reportpmc.ncbi.nlm.nih.gov

Breeding

Reproduction deep

Wild summary

Maturity months
16-18 reported
Offspring
10-30 eggs; average summaries around 10-15
Incubation
~2 months around 27.8 C in summary
Wild clutches
typically one/year; captive females may double-clutch

Academic secondaryanimaldiversity.org

Energetics 2024

Clutches
10
Mean eggs per clutch
17
Oviposition egg mass g mean
8.11

Peer reviewed experimentalsciencedirect.com

Housing through life

Husbandry authoritative

Humidity percent
40-50

Enclosure

Length rule
At least snake total length
Width height rule
At least about one-third of snake length each
Stage note
Hatchlings can use smaller enclosures or a larger enclosure with abundant small secure spaces.

Example 150cm snake cm

L
150
W
50
H
50

Thermal

Basking c
28-30
Cool c
20-24
Night c
16-20 normally acceptable

Uvb

Normal uvi basking
1
Albino uvi max
0.7
Shade uvi
0
Note
RSPCA explicitly recommends lower UVB maximum for albino morphs.

Feeding

Hatchling
one pinky every 5-6 days
Adult
one adult mouse every 7-14 days
Prey size
slightly wider than widest body point
Body condition
regular weighing required

Enrichment

  • branches/peg boards
  • multiple hides
  • humid hide
  • burrowing substrate

Institutional husbandryrspca.org.uk

Genetics and morphs

Genetics

Existing repo traits
21

Academic confirmed

Trait
Amelanistic/Amel
Inheritance
autosomal recessive
Gene
OCA2
Mutation
LTR-retrotransposon insertion causing truncated OCA2 protein
Historical founder
A North Carolina amelanistic animal incorporated into captive breeding in 1953 is reported as the foundation of modern Amel stock.

Causal molecularpmc.ncbi.nlm.nih.gov

Next audit

  • Anery A
  • Charcoal
  • Hypo
  • Caramel
  • Lavender
  • Diffused/Bloodred
  • Motley/Stripe allelism
  • Tessera
  • Palmetto
  • Scaleless welfare

Additional academic

Trait
Hypomelanistic lines
Finding
Recent genomic work investigates candidate genes underlying hypomelanism in corn snake and leopard gecko, illustrating that hobby phenotype names require line-specific molecular validation.

Peer reviewed geneticspmc.ncbi.nlm.nih.gov

Trait
Scaleless
Origin
Scientific morphology paper reports the scaleless corn-snake phenotype originated from hybridization with Great Plains rat snake (Pantherophis emoryi).
Phenotype
Dorsal/lateral scales largely absent; ventral scales retained but abnormal/split; animals in study shed normally and grew well in captivity.

Peer reviewed morphologypmc.ncbi.nlm.nih.gov

Motley stripe clcn2

Locus
CLCN2 region
Inheritance
two recessive alleles at one locus
Compound heterozygote
Motley/Stripe has intermediate phenotype

Alleles

  • Motley
  • Stripe

Molecular findings

Motley
CLCN2 significantly downregulated in embryonic skin; regulatory/disruptive mechanism under study.
Stripe
LTR-retrotransposon insertion in CLCN2 introduces premature stop and truncates protein.

Peer reviewed molecularpmc.ncbi.nlm.nih.gov

Current specialist scope

Measured at
2026-09-27
Line bred rule
Line-bred traits are excluded from probability calculations.

Allelic loci

  • Amelanistic
  • Ultra
  • Hypomelanistic
  • Christmas
  • Strawberry
  • Motley
  • Stripe

Dominant traits

  • Tessera
  • Buf
  • Toffee

Incomplete dominant

  • Palmetto

Current specialist modelryangstudio.com

Wild-caught or captive-bred

Trade history provenance

Provenance rule
Captive-bred morph ancestry, hybrid-origin traits, and geographic/locality claims must be stored separately. A common captive-bred Corn Snake should not be sold as locality stock without records.

Long term pet trade

Finding
Corn snakes have been popular in the European/Western pet trade for decades and were already being sold in numerous captive-bred colour morphs in 1990s trade reviews.

Historical trade reviewresearchgate.net

Modern captive breeding

Finding
Recent exotic-pet-trade literature treats Corn Snakes as widely captive bred and among the common beginner species dominating the trade.

Peer reviewed trade contextpmc.ncbi.nlm.nih.gov pmc.ncbi.nlm.nih.gov

Pet trade escape pathway

Australia

Finding
79 free-ranging corn snakes were recorded around Sydney from 2002-2014 despite private keeping/import restrictions; pet escape/release was identified as the pathway.

researchgate.net

Brazil

Finding
Corn Snake represented the largest share of detected illegal online exotic-snake advertisements in one southeastern Brazil dataset and has establishment potential.

pmc.ncbi.nlm.nih.gov

Back to the Atlas My keep

https://keepr.pet/husbandry/en/pantherophis-guttatus

Others in this group

What this sheet states

100%
TemperatureHumidityEnclosure sizeActivityOriginDietSourcesUVB

Every field this product runs on is stated here. That is not a claim that the values are right: it says what the sheet states, not whether it is true. Whether a human has read it is the badge at the top of this page.

UVB is measured but does not count: it is absent from 420 of 678 sheets, and on most of them that is not a gap, since a nocturnal snake's sheet has no reason to state a UV index. Counting it would call the library incomplete without cause.