The oldest snake fossil on record looks almost like a modern snake, except for one glaring difference: It has four feet, each with five digits, a new study finds.
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Snakes used to have four legs, according to a roughly 120-million-year-old fossil from northeastern Brazil.
Every spring, red-sided garter snakes leave their hibernation burrows to engage in a frenzied jumble of mating. But doing the deed is no easy feat for males.
The black mamba is one of the fastest and deadliest snakes in the world. Two drops of its venom can kill a person.
Cobras are large, venomous snakes with a trademark hood. They hiss and spit and can raise the upper part of their bodies high enough to look you in the eye.
Rattlesnakes are found throughout North and South America. Their distinctive rattle warns intruders to stay away!
Copperhead snakes are common in North America, and have the distinction of biting more people in the United States than any other snake.
New research shows how external genitals arose from very different starting places for reptiles and mammals.
Snake sex involves mating balls, battles similar to arm-wrestling and, sometimes, asexual reproduction.
One snake's ability to shimmy up slippery sand dunes made it the perfect subject for a new study aimed at getting robots out of the lab and into the real world.
There are more than 3,000 species of snakes in the world and there is at least one type of snake on every continent except Antarctica.
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