All substances take up the least amount of volume in their (1.) solid phase, a little more volume in their (2.) liquid phase, and the largest amount of volume in their (3.) gas phase. The closer atoms or molecules get to one another, the less volume is occupied by the substance that they comprise.
A large, retrospective series examining human bite wounds in children found that none of the bites manifesting as abrasions became infected, while the rate of infection was much higher in bite wounds that caused punctures or lacerations.
People have likened the symptoms of a wolf spider bite to those produced by a brown recluse spider bite, but to a lesser extent. The symptoms are characterized by swelling, itching, pain. For some people, allergic reactions may flare up, and these could also come with a lot of dizziness and nausea. If you get any serious reaction to a wolf spider bite, then you should get to a doctor as quickly as possible. In some cases, the bite will not elicit any measurable symptoms, and the victim may consider himself to be lucky, but in other cases, the wound takes a long time to heal, and may become necrotizing.