Head to head
Timber Rattlesnake vs Eastern Copperhead
The timber rattlesnake and the eastern copperhead share the woods of the eastern United States, often the same hillside, and both are pit vipers with heat pits, vertical pupils, and hinged fangs. But one carries a warning device on its tail and a potent venom it is extremely reluctant to deliver, and the other stays silent, trusts its camouflage, and ends up biting far more people, though far less dangerously.
| Timber Rattlesnake | Eastern Copperhead | |
|---|---|---|
| Size | 1 to 1.5 m, heavy-bodied | 60 to 90 cm, slender |
| Rattle | Yes, a segmented keratin rattle | No rattle; may vibrate the tail in leaves |
| Pattern | Dark chevron or V-shaped crossbands | Coppery, with hourglass crossbands narrow over the back |
| Venom | Potentially severe; some populations partly neurotoxic | The mildest of the North American pit vipers |
| Behaviour when approached | Usually stays still and coiled; rattles late, bites reluctantly | Freezes and relies on camouflage; does not warn |
| Bites on people | Uncommon; the snake avoids confrontation | The most common venomous snakebite in the US |
| Deaths | Rare, but the more dangerous bite of the two | Very rare |
| Conservation | Declining; protected in many northeastern states | Common and widespread |
Rattlesnake vs Copperhead: common questions
Which is more dangerous, a rattlesnake or a copperhead?
Drop for drop, the timber rattlesnake has the more dangerous venom, and a serious envenoming from one, especially in a region where the local population carries neurotoxins, can be life-threatening and often needs a large dose of antivenom. But a bite from a timber rattlesnake is uncommon, because the snake goes to great lengths to avoid people, holding still, then rattling, then bluff-striking, and only biting with full venom if it is actually grabbed or trodden on. The copperhead has milder venom that rarely threatens life, but it bites far more people, because instead of retreating or rattling it stays motionless and trusts its camouflage, so hikers and gardeners put a hand or foot on one without warning. So the rattlesnake is the worse bite, and the copperhead is the more likely bite.
How do I tell a copperhead from a young rattlesnake?
Look at the tail and the crossband shape. A copperhead of any age has a plain tail ending in a simple point, and juveniles have a bright yellow or greenish tail tip that they wiggle as a lure. A rattlesnake, even a newborn, has a small button or a short string of rattle segments at the end of the tail. The body pattern also differs: a copperhead has distinct hourglass or dumbbell-shaped crossbands, wide down the sides and pinched thin across the spine, in coppery and tan tones, while a timber rattlesnake has darker, more V-shaped or jagged chevron bands, often on a greyer or yellower ground, and frequently a rust-coloured stripe down the back. Both have the triangular head, the heat pit, and the vertical pupil of a pit viper.
Do copperheads and rattlesnakes live together?
Yes, often on the same rocky, wooded hillside in the eastern United States, and they sometimes even share a winter den, along with other snakes such as rat snakes. They overlap across a wide band from the Appalachians through the Piedmont and into parts of the Midwest and South. Where they co-occur, the rattlesnake tends to use more rugged, less disturbed forest and rocky outcrops, while the copperhead is more of a habitat generalist and turns up readily around houses, gardens, woodpiles, and suburban greenbelts, which is another reason people encounter copperheads more.