How Many Different Types of Snakes Are Venomous?

About 600 types of snakes are venomous, or able to inject toxins through their bite, out of the estimated 3,000 snake species worldwide. The majority of snakes will smother or swallow their prey rather than injecting it with venom. Out of the snake species that are venomous, only about half are considered to be threats to humans. The others generally will not attack people unless they are provoked. The venom from snakes is either neurotoxic, meaning that it targets the nervous system, or hemotoxic, which targets the blood.

More about venomous snakes:

  • One of the most venomous snakes, the hook-nosed sea snake, lives in southeast Asia and can kill with just 1.5 milligrams of its venom.
  • Australia has the most highly venomous snake species, being home to 21 of the world's 25 most venomous snake species, but the country's death rate from snakebites is less than six people per year.
  • The king cobra is thought to be the world’s largest venomous snake, measuring at an average length of 18 feet (5.49 m).
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Discussion Comments


Well, if anacondas can eat an 8ft caiman (gator) then a 6 foot human might be a tasty treat.


Does anyone know if any snakes are big enough to eat humans? I've seen it in those ridiculously farfetched Anaconda movies, but I'm not quite sure if that's possible. Considering how slow snakes are, I'm assuming that you'd have to be caught off guard before it can even touch you.


I've always been interested in snakes, but I don't think they make very good pets. They feel more like exhibits, if you ask me. Unlike rabbits, which you can hug and pet, and dogs who will love and greet you, snakes don't do much of anything.

My science teacher had a "pet" snake in her classroom once. It was interesting to watch, if not a little disturbing. Every Monday, she would feed it a live mouse, who would get terrorized and crushed in its coils. The students and I were fascinated, but we thought it was a bit cruel.

Snakes are very interesting creatures, once you get to know them, that is. I think that many people have a fear of snakes due to their intimidating appearance, and how you can get bitten before you even know it. Considering how they're always slithering on the ground, it's possible for you to nearly step on one, startling it, and causing it to bite you.
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