Tell them apart
Broad-banded Copperhead vs. Western Ratsnake
It matters: the Broad-banded Copperhead is venomous, while the Western Ratsnake is harmless.
Broad-banded Copperhead
Agkistrodon laticinctus
Venomous
- Family
- Viperidae
- Group
- Copperhead
- Size
- Usually 2–4 ft, heavy-bodied.
- Identify
- Heavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Western Ratsnake
Pantherophis obsoletus
Harmless
- Family
- Colubridae
- Group
- Ratsnake
- Size
- 3–6 ft — among the largest U.S. snakes.
- Identify
- Long-bodied with weakly keeled scales; blotched, striped, or solid depending on species.
How to tell them apart
Often confused with the venomous copperhead, but this snake is harmless, with round pupils and no facial pit.
Never rely on a single feature to judge a live snake. If you cannot positively identify it, keep your distance. Informational only.