Species profile · Viperidae

Agkistrodon contortrix

Complete care sheet and morph genetics registry for the eastern copperhead — husbandry parameters, diet, breeding and pairing calculator.

CopperheadHighland MoccasinMocassin à tête cuivréeKupferkopfPilot Snake (Folk name)
Adult size
60–95 cm
Lifespan
15–20 yrs
Difficulty
Expert
Temperament
Diurnal
Activity
Diurnal
Reproduction
Viviparous
01

Husbandry requirements

Eastern Copperhead — origin: Eastern and central United States (North America); deciduous forests, woodland edges, rocky talus slopes and wooded wetlands..

Terrarium temperature gradient

Night min18 °C
Cool side20–24 °C
Warm side27–30 °C
Basking spot30–32 °C

A temperate species: maintain a clear thermal gradient. A moderate warm spot under the lamp, never scorching. A night-time drop is beneficial in summer. For breeding, a winter brumation lasting several months at low temperatures with a shortened photoperiod is required.

Enclosure (adult)
120 × 60 × 45 cm

Sturdy terrestrial terrarium with a LOCKABLE, escape-proof closure (venomous species — safety standards essential: latches, a 'venomous' warning label, controlled access).

Floor length at least equal to the snake's length; the species is terrestrial and barely climbs. Provide sealed hides on both the warm and cool sides, plus a humid hide. In France/the EU, keeping requires a certificate of competence and an establishment-opening permit; the species is NOT listed under CITES, but its venomous nature places its keeping under strict regulation.

Humidity
40–60 %

Moderate humidity. Provide a humid hide (sphagnum), especially during shedding; avoid a permanently waterlogged substrate, which promotes scale rot.

Substrate
Shredded aspenCoconut fibreCypress mulchUntreated leaf litterOrchid bark

A loose substrate that allows partial burrowing and suits moderate humidity; clean it regularly to prevent skin infections and parasites.

UVB
Optional

Low-level UVB is beneficial (a low-percentage tube, low Ferguson zone) although not strictly essential for a partly nocturnal species; it improves calcium metabolism and natural behaviour. Provide a shaded area.

Water source
Always available

Clean water available at all times in a stable bowl wide enough for soaking; refresh it frequently. Tend the water source with the same safety precautions (hook).

Origin
Viperidae (Crotalinae — vipère à fossettes)

Eastern and central United States (North America); deciduous forests, woodland edges, rocky talus slopes and wooded wetlands.

02

Feeding & health

Diet

Carnivore (insectivorous/vertebrate-eating depending on age) — In captivity: appropriately sized rodents (mice, young rats). In the wild: rodents, amphibians, lizards, birds and insects — cicadas make up a notable seasonal feast.

Feed thawed prey with tongs/hook, never bringing your hand close. Adults at spaced-out intervals; juveniles more often. Neonates attract their prey by 'caudal luring' (wiggling the yellow tail). Avoid overfeeding, as this species readily becomes overweight.

Breeding
Viviparous

Litter of live young. Mating occurs in spring and autumn; a winter brumation at low temperatures is generally required to trigger breeding. The neonates are fully venomous from birth.

Health watch points
  • Respiratory infections (inadequate heating or ventilation)
  • Stomatitis (mouth rot)
  • Dysecdysis / incomplete sheds from insufficient humidity
  • Dermatitis and scale rot (blister disease) on a too-damp or dirty substrate
  • Internal parasites, common in wild-caught individuals
03

Morphs & genetics

Registry of 3 documented genes and 1 named combos for Eastern Copperhead.

  • Albino (T-) amelanisticRec
  • Hypomelanistic pastelDom
  • Axanthic aneryRec
Named combos — 1 documented combined morphs
Snow
04

Pairing calculator

Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.

🧬

Eastern Copperhead × Eastern Copperhead

Probabilities per gene (independent loci).

GeneParent AParent B
Expected clutchSelect at least one gene on a parent.
05

Frequently asked questions

Answers to the most common questions about keeping the eastern copperhead.

How big does an adult Eastern Copperhead get?
An adult Eastern Copperhead typically measures 60–95 cm (stout build, though less bulky than the cottonmouth (water moccasin). neonates have a bright yellow tail tip used for 'caudal luring' (attracting prey by wiggling the tail).).
What temperature and humidity does a Eastern Copperhead need?
A gradient of roughly 20–24 °C on the cool side to 27–30 °C on the warm side, with a basking spot of 30–32 °C. Humidity 40–60 %.
What does a Eastern Copperhead eat?
Carnivore (insectivorous/vertebrate-eating depending on age): In captivity: appropriately sized rodents (mice, young rats). In the wild: rodents, amphibians, lizards, birds and insects — cicadas make up a notable seasonal feast..
Is the Eastern Copperhead a good reptile for beginners?
Expert level. VENOMOUS SPECIES — for experienced keepers holding the appropriate legal permits only. A cryptic snake that relies entirely on its camouflage: unlike rattlesnakes it gives no warning and freezes instead of fleeing, which leads to accidental bites when it is stepped on or handled. Reluctant to bite unless touched, but its hemotoxic venom makes every bite painful and medically serious (rarely fatal in a healthy adult, yet always requiring hospital care). Handle only with a hook/tongs, never with bare hands. Plan ahead: a lifespan of 15–20 yrs.

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