How fast can a mamba kill u? Can it kill u within minutes if the right amount of venom is injected?

in a nutshell ?

Black mamba bites can potentially kill a human within minutes depending on the health, size, age, and psychological state of the human. Other factors include penetration of one or both fangs, amount of venom injected, location of the bite, and proximity to major blood vessels. The health of the snake and the interval since it last used its venom mechanism is also important.

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Ken

"Somewhere in heaven, Billy Martin just got fired. RIP George Steinbrenner"

In other words...you're dead huh ken?

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Some think they can. Some wish they could. Some do.