Wolf spiders prey on insects that are walking or resting on the ground. Outside, they actively hunt in the open during the day and night, often observed on the ground in litter and on low vegetation as well as in burrows and under debris on soil. During the summer wolf spiders will try to escape the hot weather outside and will move inside homes or structures where they prefer dark, cool and even control temperatures. Instead of spinning webs to catch prey they make a small, thick web where they rest. Have a distinctive pattern of eyes: four small eyes in front in a straight row, one middle pair of larger eyes, and one rear pair of widely spaced eyes on top of the head. They have long hairy legs. They are usually black and white or strongly contrasting light and dark, which can make them difficult to discern unless they are moving. There are about 200 species in North America.