Wolf spiders are a family of spiders known as Lycosidae. They are hunting spiders that do not spin webs to catch their prey; instead, they chase or ambush their prey. Wolf spiders have excellent eyesight with their eight eyes arranged in three rows, including two large prominent eyes. They are mostly solitary and can be found in a variety of habitats, from woodlands and gardens to wetlands. The females carry their egg sacs attached to their spinnerets and later carry their spiderlings on their backs. Wolf spiders range in size, colors, and markings but are generally robust and agile hunters. They are often grey, brown, black, or tan with body markings like stripes or spots. Their bite is generally harmless to humans though it can cause pain, redness, and swelling. They are not aggressive and usually bite only in self-defense. Wolf spiders resemble nursery web spiders but can be distinguished by their eye arrangement and egg sac carrying behavior. They are different from tarantulas, fishing spiders, grass spiders, and brown recluses. They play an important role as predators of insects. There is no direct information on "spider" alone since it refers to a large category of arachnids. However, wolf spiders are a specific type of spider with unique behaviors and characteristics described above.