How many of her babies does a female wolf spider carry with her?

The female wolf spider carries dozens of eggs in a sac with her, according to Spiderz Rule. Then, when the eggs hatch the infant spiders move onto the mother's back until they are old enough to hunt on their own.

The female wolf spider can lay dozens of eggs at one time and wrap them in a large ball of web, attaching it to her abdomen. These eggs hatch in about nine to 27 days depending on the surrounding temperature and species of wolf spider. The female wolf spider is the only spider that carries her eggs with her.