Can a pit bull stay in labor for 3 days or more than?

Although animal whelping is a 'natural event' this does not mean that the animal does not get into serious trouble if left unattended. Labour commonly begins 63 days after the mating, but healthy pups are born safely at 59 days as well.

The labor lasts approximately six to twelve hours, or up to twenty-four hours in a bitch having her first litter.