Many people have a fear of spiders and many others are afraid of snakes. For those who are afraid of or dislike both (such as myself) this snake is something you would see in your nightmares. The spider-tailed horned viper (scientific name: Pseudocerastes urarachnoides) looks like any other snake that can blend into its environment, but when you look at its tail you can see what makes it different and how it got its interesting name. 

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At the very end of it there is a protuberance that has little spine-like shapes sticking out of it that give it the appearance of a spider. The way he is able to twitch and twist his tail makes it look like there is a spider crawling lazily around on the rocks. With this, he is able to draw in different prey which he can then easily attack like he does in this video. 

The blog Life Is Short, But Snakes Are Long sheds a little more light on how this snake was discovered and what people first thought upon seeing it. The first time a specimen of it was collected was by the Second Street Expedition in 1968. They originally thought the protuberance at the end of its tail was a solfugid (a creature also known as a sun spider or wind scorpion). When they examined it closer they discovered it was actually part of the snake, but they assumed it was a tumor of some sort.

In 2001 another specie was collected and, sometime later, a third was found. Each had the same tail leading them to the conclusion that it was actually part of the snake's normal structure. They studied it further and discovered that the snake's caudal vertebrae was actually extended into this part of the tail. This is how the snake is able to twitch it the way it does.

This snake has a fun history, but it it still a pretty creepy creature. At the same time, you have to admit that it has a clever structure and shouldn't find itself short on prey anytime soon. Check out the video to see that crazy tail in action.