The largest North American wolf spider is Hogna carolinensis, the carolina wolf spider. This gray, to brownish, spider with dark undersides takes one and a half years to reach maturity and may live as long as three years. While the males will generally have a body length of less than an inch, the females may reach an inch and a half long. Adding their legs into the size, this spider looks impressively large. H. carolinensis combines both an active wandering life style and a sedentary style with its burrow. While often running around or wandering to find prey, they spend a portion of their lives tied to burrows. The burrows may be five to eight inches deep, often vertical, but may be inclined near the opening. They often have a 'turret' of material built up at the edges. Activity time is normally nocturnal, at night, but many are active throughout the day. Females with egg sacs or carrying young may also be found actively wandering at any time of the day. Female wolf spiders make an egg sac which they carry around attached to their spinnerets. After the spiderlings are old enough, they help them escape from the sac and the mother then carries her young which hold on to special hairs on her abdomen. The female has between 100 and 600 possible young in her egg sac. She may also make more than one egg sac.