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How to identify it
- Tan, gray, copper or pinkish-tan body crossed by dark brown hourglass-shaped bands that are wide on the sides and narrow along the back.[2][3][1]
- A thick body, usually 2 to 3 feet long as an adult, with a broad, coppery head clearly wider than the neck.[2][3][1]
- A deep heat-sensing pit on each side of the face between the nostril and the eye, and eyes with vertical pupils.[2][1]
- Young copperheads have a bright yellow or yellow-green tail tip for about their first year, which they wiggle to lure prey.[3][2]
- It has no rattle, but an alarmed copperhead may vibrate its tail rapidly, making a buzzing noise in dry leaves.[3]
Look-alikes
| Look-alike | How to tell them apart |
|---|---|
| Corn snake | Harmless corn snakes are longer and slimmer with smooth, shiny scales, a narrow head, and squarish black-edged blotches, often red or orange.[3] |
| Northern water snake | Water snakes have a squarer pattern that is widest on the back rather than on the sides, and they stay in or near water.[3] |
| Rattlesnakes | Rattlesnakes are fellow pit vipers but most have a rattle at the tail tip; copperheads have no rattle, even though they may buzz their tails.[3][5] |
Where it lives
Copperheads range across most of the eastern seaboard, through the central states and west to west Texas, in wooded, rocky and brushy areas.[3][4]
Biology and life cycle
They live on rocky wooded hillsides, in brushy creek edges and swamps, and around old farm buildings, sawmills, dumps and old fields.[2][3]
Mice and voles make up most of the diet, along with frogs, lizards, small birds and insects, especially emerging cicadas.[2][3]
Copperheads rely on camouflage and usually stay still when approached; they seldom strike unless provoked.[2][3]
They are active from about mid-March through early November and become mostly nocturnal in the hottest summer months.[2]
Mating happens in spring and late summer, and live young, usually fewer than ten, are born from August to early October with working fangs and venom.[2][3][6]
In winter they shelter in rocky ledges, rock piles, crevices, hollow logs, stumps and woodpiles.[2][3]
Damage and signs
- Snakes do not damage buildings, lawns or gardens; the concern with copperheads is a defensive bite when someone handles, threatens or comes too close to one.[7][2]
- Most bites happen when people try to kill or handle venomous snakes.[2]
- Pets can be badly hurt by a venomous snakebite, especially on the nose or face.[7]
- Woodpiles, junk piles, heavy mulch, overgrown shrubs and areas where rodents are common can draw snakes close to a house.[6][8]
Health risk
CDC lists puncture marks, bleeding, redness, swelling, bruising or blistering and severe pain as bite symptoms, sometimes followed by nausea or trouble seeing or breathing. Copperhead venom is considered mild compared with other venomous snakes, and human deaths are almost unheard of.[1][2][3]
Control
Prevention
Wear boots and long pants in snake habitat and leather gloves when moving brush, and never reach under rocks, logs or debris you cannot see.[1][2]
Step onto a log or rock first and then over it, and look the ground over before you sit or stand near rocks or logs.[2]
Keep them out
Seal openings in foundations and around doors, windows, pipes and utility lines as you would to keep out mice; ICWDM advises closing gaps 1/8 inch and larger.[8]
For a children's play area, a snake-proof fence of 1/4-inch galvanized hardware cloth, 36 inches tall, buried 4 to 6 inches and slanted outward, keeps out venomous snakes.[8]
Sanitation
Remove woodpiles, lumber, rocks, boards and debris lying near the house, keep grass closely mowed, and store pet food and other rodent food in sealed containers.[8]
When to call a professional
Leave a copperhead alone and keep people and pets away; if it must be removed, call your state wildlife agency or a trained wildlife control operator.[2][4][8]
If someone is bitten: what CDC says to do
Seek emergency medical attention as soon as possible to start antivenom if needed and stop irreversible damage.[1]
If you can, take a photograph of the snake from a safe distance to help identify it.[1]
Keep calm and give first aid while waiting for a ride to the hospital: lie or sit down with the bite in a neutral position of comfort.[1]
Remove rings and watches before swelling starts, wash the bite with soap and water, and cover it with a clean, dry dressing.[1]
What CDC says not to do
Do not pick up the snake or try to trap it, and never handle a venomous snake, not even a dead one or its decapitated head.[1]
Do not wait for symptoms to appear; get medical help right away.[1]
Do not apply a tourniquet, electric shock or folk therapies, and do not slash or cut the wound in any way.[1]
Do not try to suck out the venom, and do not apply ice or put the wound in water.[1]
Do not drink alcohol as a painkiller or take pain relievers.[1]
Legal status
Snakes are classed as nongame wildlife and protected in most states, and some species are listed as threatened or endangered.[5]
In Missouri, for example, all native snakes are protected, and killing one is allowed only when a venomous snake is close enough to people to risk a bite.[2]
Texas Parks and Wildlife asks people not to kill snakes, even venomous ones, since they usually retreat if given the chance.[4]
Check your state wildlife agency's rules before taking any action against a snake.[5]
What doesn't work
Snake repellents have been promoted, but none has strong research showing it works in real-world use.[8]
No toxicants are registered for snake control.[8]
Copperheads do not smell like cucumbers, and finding one does not mean its mate is nearby.[3]
Common questions
- Are baby copperheads more dangerous than adults?
- No. Georgia DNR says copperheads of any age can control how much venom they inject, and dry bites with no venom are common.[3]
- Should I kill a copperhead in my yard?
- No. Most bites happen when people try to kill or handle snakes, and copperheads are protected in many states; keep your distance and call a professional if it must go.[2][5][4]
- Why are copperheads in my yard?
- They follow food and cover. Rodents, leaf litter, woodpiles, rock piles and dense shrubs near the house give them places to hunt and hide.[6][2][8]
Sources
- U.S. Centers for Disease Control and Prevention, NIOSH, “Venomous Snakes at Work (reviewed September 23, 2026).” www.cdc.gov/niosh/outdoor-workers/about/venomous-snakes.html (accessed 2026-10-06)
- Missouri Department of Conservation, “Eastern Copperhead (Field Guide).” mdc.mo.gov/discover-nature/field-guide/eastern-copperhead (accessed 2026-10-06)
- Georgia Department of Natural Resources, Wildlife Resources Division, “Venomous Snakes Fact Sheet Series: Copperhead.” gadnrle.org/sites/default/files/wrd/pdf/fact-sheets/Venomous%20Snakes%20-%20Copperhead.pdf (accessed 2026-10-06)
- Texas Parks and Wildlife Department, “Hunter Education: Snakes.” tpwd.texas.gov/education/hunter-education/online-course/preparation-and-survival/snakes (accessed 2026-10-06)
- Internet Center for Wildlife Damage Management, “Snakes: Identification.” icwdm.org/species/reptiles/snakes/ (accessed 2026-10-06). Run by university wildlife damage specialists (maintained at the University of Wisconsin-Stevens Point); species modules are based on Prevention and Control of Wildlife Damage (University of Nebraska Cooperative Extension, 1994).
- Internet Center for Wildlife Damage Management, “Snake Biology.” icwdm.org/species/reptiles/snakes/snake-biology/ (accessed 2026-10-06). Run by university wildlife damage specialists (maintained at the University of Wisconsin-Stevens Point); species modules are based on Prevention and Control of Wildlife Damage (University of Nebraska Cooperative Extension, 1994).
- Internet Center for Wildlife Damage Management, “Snake Damage Identification.” icwdm.org/species/reptiles/snakes/snake-damage-identification/ (accessed 2026-10-06). Run by university wildlife damage specialists (maintained at the University of Wisconsin-Stevens Point); species modules are based on Prevention and Control of Wildlife Damage (University of Nebraska Cooperative Extension, 1994).
- Internet Center for Wildlife Damage Management, “Snake Damage Prevention and Control Methods.” icwdm.org/species/reptiles/snakes/snake-damage-prevention-and-control-methods/ (accessed 2026-10-06). Run by university wildlife damage specialists (maintained at the University of Wisconsin-Stevens Point); species modules are based on Prevention and Control of Wildlife Damage (University of Nebraska Cooperative Extension, 1994).
- iNaturalist, “Agkistrodon contortrix taxon page (order and family).” www.inaturalist.org/taxa/912622 (accessed 2026-10-06)