Although many of the spiders we notice when outdoors do indeed build webs, there are literally thousands of highly successful species that don’t. Instead, these species rely on their speed and sight to catch prey. For example, there are around six thousand species of Jumping spiders, which stalk and pounce on their prey, rather than trap it in a web. Huntsman and Wolf Spiders also stalk prey on foot, though they aren’t quite as agile.