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Global Animal Guide

Western Diamondback Rattlesnake vs King Cobra

Quick answer

In a hypothetical one-on-one, the King Cobra would most likely come out on top in most encounters, thanks to its more dangerous natural weapons and superior speed. In reality, animals like these rarely meet, and both would usually avoid a fight.

This is a hypothetical, educational comparison based on typical size, strength, and natural weaponry. In the wild these animals rarely meet, and most encounters end without a fight.

By , Founder Last reviewed How we research & review
Western diamondback rattlesnake coiled with raised rattle on dry desert ground Power 42

Reptile

Least Concern
Western Diamondback Rattlesnake
Weight 1.8 kg
Length 1.2 m
Top speed 8 km/h
Strength 25/100
Deadliness 70/100
Intelligence 18/100
Lifespan 18 yr
King cobra raised up with its hood spread against a blurred jungle background Winner Power 52

Reptile

Vulnerable
King Cobra
Weight 9 kg
Length 5.5 m
Top speed 18 km/h
Strength 30/100
Deadliness 85/100
Intelligence 45/100
Lifespan 20 yr

Western Diamondback Rattlesnake vs King Cobra compared

Side-by-side comparison of the Western Diamondback Rattlesnake and the King Cobra
Attribute Western Diamondback Rattlesnake King Cobra
Weight 1.8 kg 9 kg
Length 1.2 m 5.5 m
Top speed 8 km/h 18 km/h
Strength 25/100 30/100
Deadliness 70/100 85/100
Intelligence 18/100 45/100
Lifespan 18 yr 20 yr
Play the animal games Western Diamondback Rattlesnake guide King Cobra guide

Western Diamondback Rattlesnake vs King Cobra: common questions

Who would win in a fight, a Western Diamondback Rattlesnake or a King Cobra?

In a hypothetical one-on-one, the King Cobra would most likely come out on top in most encounters, thanks to its more dangerous natural weapons and superior speed. In reality, animals like these rarely meet, and both would usually avoid a fight.

Which is bigger, the Western Diamondback Rattlesnake or the King Cobra?

The King Cobra is heavier, weighing around 9 kg compared with the other's 1.8 kg.

Which is faster, the Western Diamondback Rattlesnake or the King Cobra?

The King Cobra is faster, reaching about 18 km/h versus 8 km/h.

Which lives longer, the Western Diamondback Rattlesnake or the King Cobra?

The King Cobra typically lives longer, up to around 20 years compared with 18 years.

Sources & references

Size, speed, and conservation data are drawn from established zoological references. Compare full profiles for habitat, diet, and behaviour:

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