Common European Adder vs Western Diamondback Rattlesnake
How does the Common European Adder compare to the Western Diamondback Rattlesnake? They are both members of the Viperidae family. Below we put their classification, habitat, diet, size, and conservation status side by side — and settle who would win in a fight.


Side-by-side comparison
- Scientific name
- Vipera berus
- Crotalus atrox
- Classification
- Reptile
- Reptile
- Family
- Viperidae
- Viperidae
- Habitat
- Heathland, moorland, woodland, grassland, and coastal dunes
- Desert and scrubland
- Diet
- Carnivore
- Carnivore
- Conservation status
- Least Concern
- Least Concern
- Lifespan
- 10-15 years
- 10-20 years
- Weight
- 50-100 grams
- 1.1–2.7 kg (2.5–6 lbs)
Common European Adder vs Western Diamondback Rattlesnake: who would win?

Common European Adder
50-100 grams

Western Diamondback Rattlesnake
1.1–2.7 kg (2.5–6 lbs)
Western Diamondback Rattlesnake wins high confidence
Western Diamondback Rattlesnake is substantially heavier (1.1–2.7 kg (2.5–6 lbs) vs 50-100 grams). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
Similarities
- Both are reptiles.
- Both belong to the Viperidae family.
- Both have a carnivore diet.
- Both are listed as Least Concern.
Differences
- Habitat: Heathland, moorland, woodland, grassland, and coastal dunes vs Desert and scrubland.
- Weight: 50-100 grams vs 1.1–2.7 kg (2.5–6 lbs).
Common European Adder vs Western Diamondback Rattlesnake: FAQ
Who would win in a fight, a Common European Adder or a Western Diamondback Rattlesnake?
Western Diamondback Rattlesnake wins. Western Diamondback Rattlesnake is substantially heavier (1.1–2.7 kg (2.5–6 lbs) vs 50-100 grams). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
What is the difference between a Common European Adder and a Western Diamondback Rattlesnake?
Common European Adder and Western Diamondback Rattlesnake differ in several ways — habitat: heathland, moorland, woodland, grassland, and coastal dunes vs desert and scrubland. weight: 50-100 grams vs 1.1–2.7 kg (2.5–6 lbs).
Do Common European Adder and Western Diamondback Rattlesnake live in the same habitat?
No — Common European Adder lives in heathland, moorland, woodland, grassland, and coastal dunes, while Western Diamondback Rattlesnake is found in desert and scrubland.
What do Common European Adder and Western Diamondback Rattlesnake eat?
Both Common European Adder and Western Diamondback Rattlesnake have a carnivore diet.
Which is more endangered, the Common European Adder or the Western Diamondback Rattlesnake?
Common European Adder is listed as Least Concern, while Western Diamondback Rattlesnake is listed as Least Concern.
How big are Common European Adder and Western Diamondback Rattlesnake?
Common European Adder weighs around 50-100 grams, while Western Diamondback Rattlesnake weighs around 1.1–2.7 kg (2.5–6 lbs).

Full profile
Common European Adder

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Western Diamondback Rattlesnake







