After a female wolf spider mates, she creates a clear space on the ground, lays down a rough sheet of silk, and on top of that sheet she makes a silken cup in which she lays her eggs. She next closes the cup, making a round ball, and holds onto it using her spinnerets until the babies begin to hatch. She then opens the silk ball and lets the baby spiders come out. They all run up her legs and cover the top part of her body.. There may be more than one hundred baby spiders on her back.