eli5: Why do snakes have such potent venom when the prey they eat are normally small in comparison?

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I’m from northern Australia and we have many snakes that can easily kill humans, cattle and other live stock. The power of these snakes venom seems overkill for what is required?

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9 Answers

Anonymous 0 Comments

Others have already mentioned that killing an animal quickly reduces the chance that it will get away/hurt you back.

One other important reason snake venom has gotten so deadly is that a lot of their common prey have also evolved resistance to their venom. Which sets off an arms race where snake venom gets more deadly to combat the resistance, so the venom gets deadlier, and so on.

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