Tell them apart
Gopher Snake vs. Aruba Island Rattlesnake
It matters: the Aruba Island Rattlesnake is venomous, while the Gopher Snake is harmless.
Gopher Snake
Pituophis catenifer
Harmless
- Family
- Colubridae
- Group
- Gophersnake / Bullsnake
- Size
- Large, 4–7 ft.
- Identify
- Large, blotched, with a slightly pointed snout and keeled scales — no rattle.
Aruba Island Rattlesnake
Crotalus unicolor
Venomous
- Family
- Viperidae
- Group
- Rattlesnake
- Size
- Typically 2–5 ft; some species exceed 6 ft.
- Identify
- Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
How to tell them apart
Gophersnakes and bullsnakes mimic rattlesnakes by hissing and vibrating the tail, but they are harmless and have no rattle.
Never rely on a single feature to judge a live snake. If you cannot positively identify it, keep your distance. Informational only.