An unexpected Cesarean or emergency intensive care for a sick pup, will make a break-even litter become a big liability. And this is IF you can sell the pups. Veteran breeders WITH a good reputation often don't consider a breeding unless they have cash deposits in advance of an average-sized litter. Even if the kiddies are present, they may get a chance to see the birth of a monster or a mummy, or watch the bitch scream and bite you as you attempt to deliver a pup that is half out and too large. Some bitches are not natural mothers and either ignore or savage their whelps.
Bitches can have severe delivery problems or even die in whelp.
Pups cans be born dead or with gross deformities that require euthanasia. Of course, there can be joy, but if you can't deal with the possibility of tragedy, don't start. TIME - Veteran breeders of quality dogs state they spend well over 130 hours of labor in raising an average litter. Be prepared for days off work and sleepless nights. Even after delivery, mom needs care and feeding.