Take a look at this ugly creature....It's called a camel spider. They grab hold of the camel's leg, then bites into the leg releaseing a mild venom....mild to a 800 lb camel that is....causing the leg to numb as it then tries to devour the camel's flesh. For the last few years, I've read things about the famed camel spider or wind scorpion (Eremobates gladiolus) in the Middle East. From pictures I've seen, bigger than some small pets and very aggressive. Here's what I've heard that I can't verify conclusively:
It can run upwards of 25 mph (by soldiers that have tracked the speed with humvees since it runs in their shadows).
It's called a camel spider because it climbs onto the bellies of camels and eats the stomach--because the spider secretes anesthetics to numb the flesh, the camels don't notice until their intestines fall out.
It makes a screaming/squealing noise when it runs, similar to a child screaming.