If you suffer from arachnophobia, look away now! The usual process for a female spider having babies is to lay their eggs within in egg sack, wrap it up, and then let nature take its course. The strong ones will survive, and the weaker ones won't. Wolf spiders are a little more maternal and caring than most of their kind, though.
Female wolf spiders are the only known type of arachnid who carry their young around on their back. The egg sack is attached to her abdomen, and when the eggs hatch (which can be anywhere between one and four weeks), the baby spiders crawl up onto their mother's back and stay there until they're strong enough to survive on their own. Look how many little spiders this lady is carrying! Also note her expression. Anyone who has children of her own and has endured difficult family outings can sympathize with her here.