- The decapitated head of a dead snake can still bite, even hours after death. These types of
bites usually contain huge amounts of venom.
- What is considered the most “dangerous” snake depends on both a specific country’s health care and the availability of antivenom following a bite. Based on these criteria, the most dangerous snake in the world is the saw-scaled viper, which bites and kills more people each year than any other snake.
- Snakes live on everywhere on Earth except Ireland, Iceland, New Zealand, and the North and South Poles.a
- Of the approximately 725 species of venomous snakes worldwide, 250 can kill a human with one bite.
- Snakes evolved from a four-legged reptilian ancestor—most likely a small, burrowing, land-bound lizard—about 100 million years ago. Some snakes, such as pythons and boas, still have traces of back legs.
- The fear of snakes (ophiophobia or herpetophobia) is one of the most common phobias worldwide. Approximately 1/3 of all adult humans are ophidiophobic, which suggests that humans have an innate, evolutionary fear of snakes.
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