Wolf spiders are larger than the brown recluse spider. Wolf spiders are not usually aggressive; they wait for prey to come find here to know wolf spider vs brown recluse them. Non-poisonous wolf spiders are black, grey, or brown with dark streaks or bands that form an irregular pattern on the back of the spider. Most commonly found in drain pipes and around the foundation of homes, barns, sheds, and other outbuildings; also common indoors around windows and doors. They build funnel webs lined with criss-crossed silk. Wolf spiders prey mostly on insects, some as large as themselves–but will feed on almost anything they can overpower