Watch: Female nursery web spiders try to kill and eat their mates after sex—but males are one step ahead. http://on.natgeo.com/1MHK3of | National Geographic

In a first for scientists, this predatory spider was trained to jump at a number of different heights and distances. | Gizmodo

Watch to learn the truth about spider bites! While most spiders are harmless, some can cause serious damage with their bites. Learn which spider bites you need to watch out for, how to recognize symptoms and when to seek medical attention. | PestWorld